Standing on the shoulders of the great allows you to see further than everyone.

Designing well-written tests still remains a challenging task. Some complex questions may lose clarity causing difficulties in providing meaningful answers. Basically, questions should be designed in such a way that each well-prepared student can easily give a correct answer.

Aiming to check a new test's difficulty, ask your assistants to solve the test prior to the actual exam. If the results are not satisfactory, reevaluate all ambiguous questions and correct them.