AECTP Assessment & Data Interpretation 4 — Questions and Answers
Question 1: A test has high reliability but low validity. What does this mean?
- The test produces consistent results but does not measure what it intends to measure (Correct answer)
- The test is both accurate and meaningful
- The test produces varied results but measures the right content
- The test is neither consistent nor accurate
Correct answer: The test produces consistent results but does not measure what it intends to measure
Reliability refers to consistency of scores; validity refers to whether the test measures what it is intended to measure — both are needed for a quality assessment.
Question 2: Which of the following BEST describes the difference between a student's zone of actual development and zone of proximal development (ZPD)?
- Actual development is future potential; ZPD is current performance
- Actual development is what a student can do independently; ZPD is what they can do with support (Correct answer)
- ZPD refers to gifted students only
- Actual development is measured by IQ; ZPD by achievement tests
Correct answer: Actual development is what a student can do independently; ZPD is what they can do with support
Vygotsky's ZPD is the range between independent performance and what a learner can achieve with skilled guidance.
Question 3: A school's data shows that third-grade math scores dropped significantly compared to last year's third graders. Which question should be asked FIRST when interpreting this trend?
- Should we fire the current third-grade teachers?
- Were the two groups of students comparable, and were the assessments the same? (Correct answer)
- Should we eliminate third-grade math?
- Did state standards change at the national level?
Correct answer: Were the two groups of students comparable, and were the assessments the same?
Before drawing conclusions from year-to-year comparisons, it is essential to verify that the cohorts and assessments are comparable.
Question 4: A teacher creates a test with 40 questions but only 5 cover the most heavily taught standard. This is MOST likely a problem with:
- Test reliability
- Content validity (Correct answer)
- Standard deviation
- Norm referencing
Correct answer: Content validity
Content validity requires that assessment items proportionally represent the content and emphasis of instruction.
Question 5: Which accommodation would MOST appropriately address a student with a processing speed deficit during a timed assessment?
- Read aloud support
- Preferential seating
- Extended time (Correct answer)
- Reduced answer choices
Correct answer: Extended time
Extended time directly addresses processing speed deficits by removing the speed barrier while keeping content demands intact.
Question 6: In a normal distribution of test scores, approximately what percentage of students score within one standard deviation of the mean?
- 50%
- 68% (Correct answer)
- 95%
- 99%
Correct answer: 68%
In a normal distribution, approximately 68% of data falls within one standard deviation above and below the mean.
Question 7: Which of the following BEST explains why using multiple measures of assessment is recommended practice?
- It reduces the amount of time teachers spend grading
- It ensures a single score determines a student's placement
- No single assessment captures a complete picture of student learning (Correct answer)
- It eliminates the need for standardized testing
Correct answer: No single assessment captures a complete picture of student learning
Multiple measures reduce reliance on any one data point and provide a fuller, more accurate view of student knowledge and skills.
AECTP Assessment & Data Interpretation 4
A test has high reliability but low validity.
What does this mean?