Не могли бы вы проверить мое мини-эссе и исправить ошибки? Exams — it is compulsory tests which…

Exams are the compulsory tests which have been written by all students.In this essay I will speak about some advantages and disadvantages of our exams. Let's see disadvantages: Many teenagers have very big stress while they are preparing to exam and they feel troubled about (или даже with) the exams.Exam preparation is very important and nervous process.Our future depend on (только этот предлог, это устойчивое выражение) our tests' results. For some people there is no opportunity to paid for college or university and they try to show much more skills during their exams but sometimes they fail them.Let's see advantages: To my point of view, exams can check our knowledge (только ед. Число) and other people must understand what we know or don't know.I think that it is first and last "advantages" of exams.To sum it all I want to say that exams should be more easier. Every year we can see that tests become more difficult.I will pass exams (не нужен предлог ни в коем случае!) next year and I'm awful scared about them.