I can see why people have to take tests in high school and college.--That is for for them and for the future kinds of work they will do. You have to know your real abilities rather than what people tell you; like when they say, "You are so good at everything." But I hated  tests. And I think the reason is that I do not absorb information like others. I do not "learn". I absorb. That is one reason I found my element in the Litvak world of yeshivot . While of course, I had to take a test before I was accepted at the Mir Yeshiva in NY, still after that, there were no tests. And if you have ever been in  a Litvak yeshiva, you know what I mean. The atmosphere is that of intense learning all day and all night. But no tests. Everyone learns at their own pace.

[And I can see why Conversation number 76 in the Conversations of Rav Nahman appealed to me. He said "Say the words in order (of the book you are learning) from start to finish"