Test difficulty is considered appropriate when most students score within which range?

• A. 50-60%
• B. 65-85%
• C. 60-75%
• D. 70-90%

Answer: (B)

The idea is that a test should be challenging enough to separate different levels of understanding, but not so hard or so easy that most students cluster at the extremes. When most students score in a middle-to-upper range, around 65–85%, the test has that balance: it yields enough high scores to show solid mastery, yet leaves room for lower scores to reflect genuine gaps. This avoids ceiling effects (everyone scoring near the top) and floor effects (most scoring near the bottom), while still providing meaningful discrimination among learners.

If scores were mostly in a very low range (like 50–60%), the test would feel too difficult or poorly aligned with the material. If scores clustered high (like 70–90%), it would be too easy and wouldn’t distinguish well between different levels of mastery.