OK I go to Kurt and have been since year 7. Here's a few things you need to know pronto before going to Kurt:
1. Kurt has his own tests, which are by far, much more difficult than any school exam and if you get over 20 (out of 50), that is considered pretty good.
2. If you don't do well (in school tests, Kurt tests or otherwise), you WILL get detention.
3. If you can't handle forced detention, don't go.
You might want to have a clearer idea about what detention is before you go.
To put it simply, you are to sit in a silent room with other students and do math for any amount of time between 3 hours to 6.
You aren't supposed to eat or drink anything besides water (most kids usually eat, it's not exactly a strict rule).
Don't even bother trying to do your homework. Just do what he tells you to do, unless you want to get shanked.
Holiday Detention:
Basically detention, but in your school holidays. It can range from once a week to every single day for 5 hours straight, depending on how regularly you stuff up.
Sometimes you will have detention every week until you improve on the next test.