Measurement

Educational measurement is the theory and practice of assessing learning and ability — designing, scoring, and validating educational tests.

Scope

It covers test theory (classical and item-response), reliability and validity, scaling and standard-setting, and assessment design and fairness.

Sub-topics

• Testing Accommodations
• Test Selection
• Test Length
• Achievement Rating
• Educational Indicators
• Growth Models
• Alternative Assessment
• Informal Assessment
• Scoring Rubrics
• Writing Evaluation
• Scoring
• Test Construction
• Failure
• Predictive Measurement
• Criticism
• Observation
• Test Results
• Test Use
• Personality Assessment
• Risk Assessment
• Parent Surveys
• Causal Models
• Control Groups
• Experimental Groups
• Matched Groups
• Sample Size
• Statistical Bias
• Auditory Evaluation
• Success
• Measurement Techniques
• Grade Point Average
• Hypothesis Testing
• Classroom Observation Techniques
• Interaction Process Analysis
• Naturalistic Observation
• Benchmarking
• Comparative Analysis
• Bibliometrics
• Cluster Grouping
• Synthesis
• Correlation
• Predictor Variables
• Cohort Analysis
• Audits (Verification)
• Evaluation Criteria
• Evaluation Utilization
• Data Analysis
• Lesson Observation Criteria
• Replication (Evaluation)
• Transcripts (Written Records)
• Cognitive Measurement
• Task Analysis
• Accuracy
• Measurement
• Network Analysis
• Evaluation
• Comparative Testing
• Multitrait Multimethod Techniques
• National Norms
• Test Format
• Vocational Evaluation
• Standard Setting (Scoring)
• Educational Testing
• Systems Analysis
• Monte Carlo Methods
• Identification
• Confidence Testing
• Guessing (Tests)
• Testing Problems
• Construct Validity
• Content Validity
• Factor Structure
• Semi Structured Interviews
• Structured Interviews
• Test Content
• Critical Incidents Method
• Delphi Technique
• Hierarchical Linear Modeling
• Scores
• Policy Analysis
• Cutting Scores
• Skill Analysis
• Equated Scores
• Raw Scores
• Online Surveys
• Prediction
• Adaptive Testing
• Computer Assisted Testing
• Individual Testing
• Response Style (Tests)
• Test Items
• Testing Programs
• Grade Equivalent Scores
• Error Patterns
• Evaluation Needs
• Evaluation Problems
• Measurement Objectives
• Focus Groups
• Pretesting
• Assessment Centers (Personnel)
• Grade Prediction
• Holistic Evaluation
• Group Testing
• Selection Criteria
• Intelligence Quotient
• Local Norms
• Norms

Core questions

• How can learning and ability be measured accurately?
• How reliable and valid are educational tests?
• How should tests be scored and scaled?
• How can assessment be made fair?

Key concepts

• Reliability
• Validity
• Item response theory
• Standard setting
• Scaling
• Test fairness

Key theories

The theory of mental measurement

Thorndike founded the quantitative measurement of educational outcomes.

Reliability

Cronbach's alpha standardized the estimation of test reliability.

Construct validity

Cronbach and Meehl formalized validity for educational and psychological tests.

History

Educational measurement grew from Thorndike's mental-measurement theory into classical test theory (reliability, validity) and item-response theory, now central to large-scale assessment.

Debates

What does a test score mean?

Construct validity reframed test interpretation as a theory-laden, evidence-based argument.

Key figures

• Edward Thorndike
• Lee Cronbach
• Paul Meehl

Seminal works

• thorndike-1904
• cronbach-1951
• cronbach-meehl-1955

Frequently asked questions

What is the difference between reliability and validity?

Reliability is the consistency of a measure; validity is whether it measures what it intends to.