Criterion or Criteria: Meaning, Differences, Grammar Rules, and Examples

Criterion or criteria is a common English grammar question that can confuse students, professionals, and even experienced writers. Both words are correct, but they serve different grammatical purposes. The main difference is simple: criterion is singular, while criteria is plural.

You use criterion when referring to one standard, requirement, or condition. You use criteria when discussing two or more standards used to make a decision or evaluate something.

For example, academic performance may be one criterion for university admission. However, academic performance, entrance exam scores, and recommendations may all be admission criteria.

These words appear frequently in academic writing, job applications, research papers, business reports, and everyday communication. Choosing the wrong form can make a sentence grammatically incorrect.

This guide explains the difference between criterion or criteria, including definitions, pronunciation, grammar rules, real-life examples, common mistakes, and frequently asked questions.

Criterion or Criteria: Quick Answer

The correct choice between criterion or criteria depends on how many standards or requirements you are discussing.

Criterion refers to one standard used to judge, measure, or evaluate something.

Criteria refers to multiple standards used to judge, measure, or evaluate something.

Criterion or Criteria Comparison Table

Simple rule: One criterion, many criteria.

Consider these examples:

• Correct: Experience is an important criterion for this job.
• Correct: Experience and education are important criteria for this job.
• Incorrect: Experience is an important criteria for this job.
• Incorrect: The company has several criterias.

The first two sentences are correct because the nouns match the number of standards being discussed.

What Does Criterion Mean?

The word criterion is a singular noun meaning one standard, principle, condition, or requirement used to make a judgment.

A criterion helps someone decide if a person, product, action, or situation meets a particular expectation.

For example, when selecting a new employee, a company may consider communication skills an important criterion.

This means communication skills are one factor used to evaluate candidates.

Definition of Criterion

A criterion is a standard used as the basis for making a decision, comparison, or evaluation.

It may refer to:

• One requirement for university admission.
• One condition for receiving a scholarship.
• One standard for evaluating employee performance.
• One factor when choosing a product.
• One measurement used in scientific research.
• One requirement for participating in a program.

The word is commonly used when a decision involves careful evaluation.

Examples of Criterion in Sentences

Here are ten examples showing how to use criterion correctly:

1. Academic achievement is an important criterion for university admission.
2. Price is the main criterion when selecting a budget smartphone.
3. One criterion for promotion is excellent job performance.
4. Customer satisfaction is a key criterion for business success.
5. The teacher explained each criterion before grading the assignment.
6. Safety is the most important criterion when choosing a family vehicle.
7. The company introduced a new criterion for employee selection.
8. Reliability is an essential criterion when evaluating equipment.
9. Every criterion must be clearly explained during the assessment.
10. The committee removed one criterion from the scholarship requirements.

Each sentence refers to a single standard or requirement.

When Should You Use Criterion?

Use criterion when discussing only one standard or condition.

For example:

Correct: The main criterion for admission is academic performance.

Incorrect: The main criteria for admission is academic performance.

The correct sentence uses criterion because it identifies one standard and pairs it with the singular verb is.

However, the phrase main criteria can be correct when referring to several important standards.

For example:

Correct: The main criteria for admission are academic performance and entrance exam results.

The number of standards determines the correct noun.

What Does Criteria Mean?

The word criteria is the plural form of criterion. It refers to two or more standards, conditions, or requirements used to make decisions.

People often evaluate something using several factors rather than one.

For example, a university may consider academic grades, entrance examination results, recommendations, and extracurricular achievements when selecting students.

These factors are collectively called admission criteria.

Definition of Criteria

Criteria are standards used to evaluate, compare, measure, or judge people, objects, activities, or situations.

The word commonly appears in:

• Educational assessments.
• Job recruitment.
• University admissions.
• Business evaluations.
• Scientific research.
• Scholarship applications.
• Product comparisons.
• Employee performance reviews.

Examples of Criteria in Sentences

1. The university has strict admission criteria.
2. Applicants must meet all eligibility criteria.
3. The teacher explained the grading criteria before the examination.
4. The company uses several criteria to evaluate employees.
5. Price and quality are important criteria when purchasing furniture.
6. The selection criteria include experience and communication skills.
7. These criteria help researchers evaluate experimental results.
8. The committee reviewed the criteria for awarding scholarships.
9. Students should understand the assessment criteria before submitting assignments.
10. The organization updated its recruitment criteria.

In each example, criteria refers to multiple standards.

When Should You Use Criteria?

Use criteria whenever you refer to more than one evaluation standard.

For example:

Correct: The hiring criteria include education, experience, and technical skills.

Incorrect: The hiring criterion include education, experience, and technical skills.

The correct sentence uses criteria because several qualifications are being discussed.

Criterion or Criteria: Main Differences Explained

Although criterion or criteria share the same basic meaning, they differ in grammatical number, verb agreement, and sentence structure.

Understanding these differences makes choosing the correct form easier.

1. Singular or Plural Meaning

The most important distinction is grammatical number.

Criterion refers to one standard.

Criteria refers to multiple standards.

Examples:

• One criterion for success is consistency.
• Three criteria for success are consistency, discipline, and dedication.

The first sentence identifies one factor, while the second identifies three.

2. Subject-Verb Agreement

The verb must agree with the grammatical number of the subject.

Because criterion is singular, it normally takes a singular verb.

Because criteria is plural, it normally takes a plural verb.

Checking subject-verb agreement is one of the easiest ways to identify grammatical mistakes.

3. Articles and Determiners

Articles and determiners also help distinguish singular nouns from plural nouns.

Use words such as a, one, each, every, or this with criterion.

Use words such as these, those, several, many, or multiple with criteria.

Examples:

• A criterion must be measurable.
• Each criterion has a specific purpose.
• Every criterion requires careful evaluation.
• Several criteria determine eligibility.
• These criteria are important.
• Multiple criteria influence the final decision.

Avoid using the singular article a directly before criteria.

4. Formal Writing Usage

Both words are appropriate in formal writing.

However, criteria frequently appears in professional documents because evaluations often involve multiple requirements.

Common expressions include:

• Admission criteria
• Selection criteria
• Assessment criteria
• Evaluation criteria
• Eligibility criteria
• Performance criteria

When referring to one individual standard within these groups, use criterion.

Criterion or Criteria in Academic Writing

Academic writing frequently uses criterion or criteria when discussing student performance, grading, assessments, and research.

Correct usage improves clarity and grammatical accuracy.

Grading Criterion or Grading Criteria

A grading criterion is one standard used to evaluate student work.

Grading criteria are multiple standards used to assess an assignment, examination, or project.

Examples:

• Grammar is one grading criterion for the essay.
• The grading criteria include grammar, organization, originality, and clarity.

Teachers often use grading rubrics containing several criteria.

Each criterion may carry a different number of marks.

Assessment Criterion or Assessment Criteria

An assessment criterion is one specific standard used during evaluation.

Assessment criteria are several standards used to measure performance.

Examples:

• Accuracy is an important assessment criterion.
• The assessment criteria include accuracy, creativity, and presentation.

Both expressions are grammatically correct when used in the appropriate context.

Admission Criterion or Admission Criteria

Universities establish standards for accepting students.

One standard is an admission criterion.

Multiple standards are admission criteria.

Examples:

• Academic achievement is an admission criterion.
• The university’s admission criteria include grades, examination scores, and recommendations.

The correct form depends on the number of admission standards being discussed.

Criterion or Criteria in Job Applications

Employers commonly use criterion or criteria when evaluating job candidates.

Understanding the distinction is useful when writing resumes, cover letters, and professional applications.

Selection Criterion or Selection Criteria

A selection criterion is one requirement used to evaluate applicants.

Selection criteria are several requirements used to identify suitable candidates.

Examples:

• Communication ability is a key selection criterion.
• The selection criteria include leadership, teamwork, and professional experience.

Job advertisements often contain a section called Selection Criteria because employers evaluate applicants using several qualifications.

Essential Criterion or Essential Criteria

An essential criterion is one mandatory condition.

Essential criteria are multiple mandatory conditions.

Examples:

• A valid driving license is an essential criterion for this position.
• The essential criteria include relevant qualifications and professional experience.

Eligibility Criterion or Eligibility Criteria

An eligibility criterion is one condition a person must satisfy to qualify.

Eligibility criteria are multiple conditions used to determine qualification.

Examples:

• Minimum age is an eligibility criterion for the program.
• Applicants must satisfy all eligibility criteria before applying.

These expressions frequently appear in scholarship applications, government programs, and recruitment processes.

Is Criteria Singular or Plural?

Criteria is plural in standard English.

Its singular form is criterion.

This distinction comes from the word’s Greek origin.

Although some speakers use criteria as a singular noun in informal conversation, formal English generally preserves the traditional distinction.

Correct Usage Examples

• This criterion is necessary.
• That criterion was removed.
• These criteria are necessary.
• Those criteria were removed.

Incorrect Usage Examples

• This criteria is necessary.
• That criteria was removed.
• These criterion are necessary.
• Those criterion were removed.

For academic and professional writing, follow the standard singular and plural forms.

Is It Criteria Is or Criteria Are?

The correct standard expression is criteria are.

Because criteria is plural, it normally takes a plural verb.

Correct Examples

• The criteria are clearly defined.
• These criteria are important.
• The eligibility criteria are available online.
• The selection criteria are difficult to meet.
• All evaluation criteria are explained in the report.

Incorrect Examples

• The criteria is clearly defined.
• These criteria is important.
• The eligibility criteria is available online.

If you are discussing only one standard, use criterion is.

Correct: The criterion is clearly defined.

Correct: The criteria are clearly defined.

Both sentences are correct, but they describe different numbers of standards.

Is It Criterion Is or Criterion Are?

The correct expression is criterion is when criterion is the singular subject.

Because it refers to one standard, it normally requires a singular verb.

Examples:

• The criterion is important.
• This criterion is difficult to satisfy.
• The main criterion is professional experience.
• Every criterion is evaluated separately.

However, when criterion forms part of a compound subject, the complete subject may require a plural verb.

For example:

Correct: The criterion and its explanation are included in the report.

The complete subject contains two elements, so the plural verb are is appropriate.

Is Criterias a Correct Word?

Criterias is not a standard English plural form.

The correct plural of criterion is criteria.

Adding another s creates an unnecessary plural ending.

Incorrect Sentences

• The company has five criterias.
• Students must follow all grading criterias.
• The scholarship criterias are strict.
• These criterias help determine performance.

Correct Sentences

• The company has five criteria.
• Students must follow all grading criteria.
• The scholarship criteria are strict.
• These criteria help determine performance.

Remember that criteria is already plural.

Is Criterions a Correct Word?

The standard plural of criterion is criteria, not criterions.

Although criterions has occasionally appeared in historical or specialized usage, it is uncommon and generally avoided in modern standard English.

For academic papers, business reports, and everyday professional communication, use criteria.

Preferred: The committee established three criteria.

Not recommended: The committee established three criterions.

Using criteria is the safest choice for clear, standard English.

Criterion or Criteria: Common Grammar Mistakes

Many mistakes occur because writers forget the singular and plural distinction.

Mistake 1: Using Criteria for One Standard

Incorrect: One important criteria is attendance.

Correct: One important criterion is attendance.

The word one requires a singular noun.

Mistake 2: Using Criterion for Multiple Standards

Incorrect: The evaluation criterion include quality and reliability.

Correct: The evaluation criteria include quality and reliability.

The sentence identifies two evaluation standards.

Mistake 3: Adding S to Criteria

Incorrect: The organization established new criterias.

Correct: The organization established new criteria.

The word criteria already expresses plurality.

Mistake 4: Using the Wrong Verb

Incorrect: The criteria is reasonable.

Correct: The criteria are reasonable.

Plural subjects normally require plural verbs.

Mistake 5: Using the Wrong Demonstrative

Incorrect: These criterion are useful.

Correct: These criteria are useful.

The demonstrative these requires a plural noun.

Mistake 6: Using A Before Criteria

Incorrect: A criteria for success is dedication.

Correct: A criterion for success is dedication.

The singular article a requires a singular countable noun.

Criterion or Criteria: Real-Life Examples

Real-life situations make the difference easier to understand.

Example 1: Choosing a Smartphone

Imagine you are buying a smartphone.

You might consider:

• Price
• Battery life
• Camera quality
• Storage capacity
• Screen size

If price is your only concern, it is your main criterion.

If you consider several factors, they are your purchasing criteria.

Examples:

• Battery life is my most important criterion.
• My criteria include price, battery life, and camera quality.

Example 2: Hiring an Employee

An employer may evaluate applicants based on qualifications, experience, and communication skills.

Examples:

• Previous experience is an important criterion.
• The hiring criteria include experience, qualifications, and communication skills.

Example 3: Evaluating a School

Parents may compare schools based on academic performance, safety, facilities, and teaching quality.

Examples:

• Student safety is a major criterion.
• The evaluation criteria include safety, academic results, and facilities.

Example 4: Choosing a Restaurant

A customer may consider food quality, price, cleanliness, and service.

Examples:

• Cleanliness is my primary criterion.
• My criteria include cleanliness, food quality, and affordability.

Example 5: Selecting a Scholarship Recipient

A scholarship committee may evaluate academic achievement, financial need, and leadership experience.

Examples:

• Academic achievement is one selection criterion.
• The scholarship criteria include academic performance, financial need, and leadership ability.

These examples show how the number of evaluation factors determines the correct word.

Criterion or Criteria: Pronunciation Guide

Criterion or criteria have similar pronunciations, but their endings differ.

How to Pronounce Criterion

Criterion: /kraɪˈtɪəriən/

Simple pronunciation:

kry-TEER-ee-un

The main stress falls on the second syllable.

How to Pronounce Criteria

Criteria: /kraɪˈtɪəriə/

Simple pronunciation:

kry-TEER-ee-uh

The main stress also falls on the second syllable.

Pronunciation Comparison

The difference in their endings can help you distinguish the words in spoken English.

Why Is Criteria the Plural of Criterion?

The words criterion and criteria come from Greek.

The Greek word kritērion referred to a means of judging or a standard used for making decisions.

Its plural form was kritēria.

English adopted these forms and preserved their singular and plural relationship.

This explains why the standard plural is criteria rather than criterions.

Similar Singular and Plural Words

Other English nouns also preserve plural patterns influenced by Greek or Latin.

Learning these patterns can improve your understanding of English grammar.

However, not every borrowed word follows the same plural rule.

Criteria or Requirements: What Is the Difference?

Criteria and requirements are related, but their meanings are not always identical.

Criteria are standards used to evaluate or judge something.

Requirements are conditions that must be satisfied.

For example, a company may require applicants to have a university degree.

That degree is a requirement.

The company may also compare candidates based on experience, communication skills, and leadership ability.

Those evaluation factors are criteria.

Examples

Requirement: Applicants must be at least 18 years old.

Criterion: Relevant professional experience will be considered during selection.

A requirement often determines basic eligibility, while a criterion may help evaluate suitability.

However, the meanings can overlap because some criteria are also mandatory requirements.

Criterion or Standard: What Is the Difference?

A criterion is a standard used for evaluation, but the word standard has a broader meaning.

A standard may describe an expected level of quality, an accepted rule, or a benchmark.

A criterion identifies a particular basis for making a judgment.

Examples

Standard: The company maintains high safety standards.

Criterion: Workplace safety is one criterion used to evaluate suppliers.

The two words can have similar meanings, but they are not interchangeable in every sentence.

Criterion or Criteria in Scientific Research

Scientific research often involves carefully defined evaluation standards.

Researchers may establish criteria before collecting data, selecting participants, or analyzing results.

Inclusion Criterion or Inclusion Criteria

An inclusion criterion is one condition that participants must satisfy to enter a study.

Inclusion criteria are multiple conditions used to determine who can participate.

Examples:

• Being at least 18 years old is one inclusion criterion.
• The inclusion criteria specify the required age range and other participant characteristics.

Exclusion Criterion or Exclusion Criteria

An exclusion criterion is one condition that prevents participation in a study.

Exclusion criteria are several conditions that may disqualify participants.

Examples:

• A particular medical history may be an exclusion criterion.
• The researchers established several exclusion criteria before recruitment.

Evaluation Criterion or Evaluation Criteria

An evaluation criterion is one standard used to assess research quality or results.

Evaluation criteria are multiple standards used for that assessment.

Examples:

• Accuracy is an important evaluation criterion.
• The evaluation criteria include accuracy, reliability, and reproducibility.

Correct usage is especially important in research papers because precise terminology improves clarity.

How to Remember Criterion or Criteria

A few simple memory techniques can help you choose the correct word every time.

1. Remember One or Many

The easiest rule is:

One criterion. Many criteria.

Whenever you are unsure, count the standards being discussed.

2. Connect Criterion With One Standard

The singular word criterion ends in -on.

Associate it with one individual standard.

3. Connect Criteria With Multiple Standards

The plural word criteria describes a collection of evaluation standards.

For example:

• One admission criterion.
• Five admission criteria.

4. Check the Verb

Look at the verb used with the noun.

If the verb does not agree with the noun, the sentence may need correction.

5. Replace the Word Mentally

Try replacing criterion with requirement.

Replace criteria with requirements.

For example:

• One requirement is important.
• Several requirements are important.

If the sentence sounds correct with the replacement, you can usually identify the appropriate form.

Criterion or Criteria Practice Quiz

Test your understanding by choosing the correct word in each sentence.

1. The most important ______ for admission is academic performance.
2. The company established five selection ______.
3. Each ______ must be evaluated separately.
4. The eligibility ______ are clearly explained.
5. Price is the primary ______ for my decision.
6. These ______ help determine employee performance.
7. One ______ was removed from the evaluation.
8. The scholarship ______ include academic achievement and financial need.
9. Every ______ has a different weight.
10. The hiring ______ have recently changed.

Correct Answers

Why These Answers Are Correct

Questions 1, 3, 5, 7, and 9 refer to one standard, so criterion is correct.

Questions 2, 4, 6, 8, and 10 refer to multiple standards, so criteria is correct.

The same rule applies in academic, professional, and everyday writing.

Frequently Asked Questions About Criterion or Criteria

What is the difference between criterion or criteria?

Criterion is a singular noun referring to one standard used for evaluation. Criteria is its plural form, referring to two or more standards. For example, experience is one hiring criterion, while experience and education are two hiring criteria.

Is it one criterion or one criteria?

The correct expression is one criterion. The word one requires a singular noun. Use criteria when discussing multiple standards.

Is it two criteria or two criterions?

The standard expression is two criteria. The accepted plural form of criterion is criteria, particularly in academic, business, and professional writing.

Is criteria singular or plural?

Criteria is plural in standard English. Its singular form is criterion. Although singular criteria sometimes appears in informal speech, it is best avoided in formal writing.

Can I say a criteria?

No. The expression a criteria is grammatically incorrect in standard English because criteria is plural. Use a criterion when discussing one standard.

Is it criteria is or criteria are?

The correct expression is criteria are because criteria is plural.

Example: The selection criteria are clearly defined.

Is it criterion is or criterion are?

Use criterion is when criterion is the singular subject.

Example: The main criterion is academic performance.

What is the plural of criterion?

The plural of criterion is criteria.

Example: The committee established several criteria for evaluating applicants.

Is criterias grammatically correct?

No. Criterias is not a standard English plural. The correct plural form is criteria, without an additional s.

Is criterions an acceptable plural?

Criterions has appeared in limited historical usage, but criteria is the established plural in modern standard English. Use criteria in formal writing.

What does selection criteria mean?

Selection criteria are standards used to evaluate candidates for a job, scholarship, award, or program. They may include education, experience, qualifications, and relevant skills.

What is an example of a criterion?

Academic achievement is an example of a criterion when evaluating scholarship applications. It represents one standard used to make a decision.

What is an example of criteria?

Examples of criteria include academic performance, financial need, leadership ability, and community involvement when evaluating scholarship applicants.

Is criteria a countable noun?

Yes. Criteria is the plural form of the countable noun criterion. You can count individual standards as one criterion, two criteria, or five criteria.

What does each criterion mean?

Each criterion means every individual standard within a group of standards.

Example: Each criterion must be evaluated separately.

The word each requires the singular form criterion.

What does meet the criteria mean?

The phrase meet the criteria means satisfying the standards or conditions required for something.

For example, an applicant who meets the admission criteria satisfies the university’s stated admission requirements.

Can criteria refer to only one requirement?

In standard formal English, criteria refers to multiple standards. If only one requirement is being discussed, use criterion.

Is it this criteria or these criteria?

The correct standard expression is these criteria because criteria is plural.

Use this criterion when referring to one standard.

Is it all criteria or all criterion?

The correct expression is all criteria when referring to every standard in a group.

Example: Applicants must satisfy all criteria before submitting their applications.

Should I use criterion or criteria in a research paper?

Use criterion when discussing one evaluation standard. Use criteria when discussing multiple standards. Both forms are appropriate in academic research when used correctly.

What is the easiest way to remember criterion or criteria?

Remember this simple rule: one criterion, many criteria.

This distinction works in academic writing, professional communication, research papers, and everyday English.

Conclusion

Understanding criterion or criteria is essential for accurate English grammar, particularly in academic, professional, and business writing.

The difference is straightforward: criterion is singular and refers to one standard, while criteria is plural and refers to multiple standards.

Use criterion with singular verbs such as is, has, and was. Use criteria with plural verbs such as are, have, and were.

Avoid common mistakes such as a criteria, criteria is, criterias, or these criterion. These expressions do not follow standard formal English grammar.

The easiest way to remember the distinction is simple: one criterion, two or more criteria.

By following this rule, you can confidently use both words in essays, research papers, job applications, business documents, and everyday communication.

Oliver Harrington

I am Oliver Harrington, a writer interested in education, useful skills, and the many ways people can continue learning throughout life. I enjoy researching topics and presenting information in a clear, straightforward way. At Teachlora, I share educational insights, learning resources, study advice, and practical ideas designed to help readers grow their knowledge. I also wrote The Lifelong Learner’s Path and Simple Skills for Better Learning to encourage readers to make learning a regular part of life.

Books:

• The Lifelong Learner’s Path
• Simple Skills for Better Learning