Reliability and Validity Illustrated

Not Valid Consistent similar responses but doesn’t test intended skill. Example: teach backstroke but test freestyle.

Not Valid - But Reliable Did freestyle Did backstroke Consistent similar responses but doesn’t test intended skill. Example: teach backstroke but test freestyle.

Valid?

Not Reliable or Valid Inconsistent responses. If not reliable, can’t be valid. Examples: students did not learn content. The test (which could be fine otherwise) doesn’t match learning.

Valid and Reliable Consistent similar responses on the targeted skill. Example: teach freestyle and test freestyle.