Diagnostic Assessment
A diagnostic assessment is used before instruction to identify what learners already know, where gaps exist, and what support they may need — helping inform the level, focus, and structure of the learning experience.
Diagnostic Assessment
Find out what learners already know before deciding what they need.
A diagnostic assessment is used before instruction to identify existing knowledge, skills, misconceptions, strengths, and learning gaps.
The results can help designers adjust the level, focus, sequence, or amount of instruction instead of assuming every learner starts in the same place.
Starting Point
The Goal Is Diagnosis — Not Simply a Pre-Test Score
A useful diagnostic assessment provides information that can influence learning decisions.
Measure What Matters for the Learning That Follows
A diagnostic assessment should focus on prerequisites and capabilities that are relevant to the upcoming learning.
Identify concepts, terminology, rules, processes, or foundational information learners already know.
Example: Can learners recognize the key steps in the process?Check whether learners can use existing knowledge to make decisions or solve relevant problems.
Example: Can they choose the correct response in a common situation?Determine whether learners can already complete a task, workflow, procedure, or skill.
Example: Can they complete the task without additional support?Diagnostic Results Should Inform the Learning Path
The same assessment result can support different decisions depending on the audience, risk level, and learning strategy.
Identify what learners know, can do, and where meaningful gaps exist.
Determine whether learners need foundational instruction, targeted support, practice, or challenge.
Adapt content, sequence, recommendations, practice, or learning pathways when appropriate.
A Diagnostic Assessment Does Not Have to Look Like a Quiz
Choose the method that best reveals the knowledge or capability you actually need to understand.
Diagnostic Assessments Need a Clear Purpose
Because diagnostic results may influence what learners see or how they are grouped, the assessment should be designed carefully and interpreted appropriately.
If there is no meaningful action tied to the result, reconsider whether the diagnostic assessment is necessary.
Before Adding a Diagnostic Assessment
Make sure the assessment will produce information that is relevant, usable, and connected to a learning decision.
If the learning experience will remain identical regardless of the result, a formal diagnostic assessment may not add enough value to justify the learner effort.