Effective testing is critical in determining individual student absorption of the material, but also the overall effectiveness of the teachings to the group. If a large percentage of students fail a particular test, analysis should be done to determine why (was the material not presented effectively, was the test flawed, were the students not pre-evaluated in a manner to determine the material was above their current level of learning, etc). The results can help better the course of instruction to ensure students are taught in manner which may better suit them and the material.
