Cambium Test Performance Benchmarks 3 — Questions and Answers
Question 1: What does 'vertical scaling' allow educators to do when using Cambium benchmark assessments across grade levels?
- Compare student scores across different grade levels on a common scale (Correct answer)
- Adjust font sizes for different grade levels
- Align questions with vertical curriculum maps only
- Administer the same test form to all grades
Correct answer: Compare student scores across different grade levels on a common scale
Vertical scaling places scores on a continuous scale so growth across grade levels can be measured meaningfully.
Question 2: Which statistic describes the consistency of student scores if the same benchmark were administered multiple times under identical conditions?
- Validity coefficient
- Reliability coefficient (Correct answer)
- Difficulty index
- Discrimination index
Correct answer: Reliability coefficient
Reliability refers to the consistency or stability of test scores across repeated administrations.
Question 3: A benchmark's 'standard error of measurement' (SEM) is BEST used to:
- Calculate the average score for the class
- Understand the range within which a student's true score likely falls (Correct answer)
- Determine how many students passed the test
- Identify which questions were too easy
Correct answer: Understand the range within which a student's true score likely falls
The SEM quantifies score imprecision, helping educators interpret individual scores as estimates rather than exact values.
Question 4: Which of the following BEST describes a 'growth percentile' on a benchmark report?
- The student's current performance level compared to national peers
- How much a student's score grew compared to students who started at the same level (Correct answer)
- The percentage of standards mastered during the year
- The student's ranking within their classroom
Correct answer: How much a student's score grew compared to students who started at the same level
A growth percentile compares a student's score change to peers who began the year at a similar starting point.
Question 5: When benchmark data shows that an entire grade level scored below the proficiency cut, the school leadership should FIRST:
- Assume the test was too hard and ignore the results
- Conduct a root-cause analysis examining curriculum, instruction, and assessment alignment (Correct answer)
- Replace all teachers in that grade level
- Wait for the next benchmark cycle before acting
Correct answer: Conduct a root-cause analysis examining curriculum, instruction, and assessment alignment
A systemic performance gap warrants a systemic root-cause analysis before implementing any response.
Question 6: An item with a difficulty index (p-value) of 0.90 on a benchmark is considered:
- Very difficult — only 10% answered correctly
- Very easy — 90% of students answered correctly (Correct answer)
- Moderately difficult — appropriate for all levels
- Unreliable — the item should be discarded
Correct answer: Very easy — 90% of students answered correctly
A p-value of 0.90 means 90% of test takers answered the item correctly, indicating a very easy item.
Question 7: Which benchmark reporting feature allows a teacher to see performance broken down by individual state standards or learning objectives?
- Norm-referenced report
- Standards mastery report (Correct answer)
- Percentile rank report
- Composite score summary
Correct answer: Standards mastery report
A standards mastery report disaggregates scores by specific standards so teachers can target instruction precisely.
Cambium Test Performance Benchmarks 3
What does 'vertical scaling' allow educators to do when using Cambium benchmark assessments across grade levels?