1, on the issue of spending money on school, sometimes there are preconditions for spending money. For example, you have to be online, not too bad. However, if you ask acquaintances for help, it is possible to get into the school you want. This situation is rare in undergraduate colleges, but it is possible in junior colleges. But don't think that you can go to school as long as you pay. Finally, some junior colleges in Tianjin scored very low. I don't think you need to find someone to spend money or anything, just take the exam casually. You are a secondary school student, and you can also apply for an undergraduate school. If I remember correctly, I can take math, Chinese, English and computer. It's very simple.
I don't think it is necessary to go to cram school for the spring exam, but I don't know your level. Take English for example, reading is a relatively simple article, and it is no problem to understand. Computers are also basic things.
There are many training institutions, even some vocational colleges, and the fees are different.
4. No matter whether you go to cram school or not, the basic knowledge is reviewed first, even if you go to a tutor, you won't talk from the basics bit by bit. So the important thing is to rely on yourself.
I still know something about this. Some students took the exam before, and I don't know your specific situation. You can ask me again if you don't understand. I will tell you everything I know.