Too much importance is given to takin exams at school. Do you agree?

Nawaday and before in the past at school give nore importance to exas than to evaluating. Is true that the exams are very important, but in my opinion are not the most important, because in 1h and 10 exersaises is imposible to evaluate a student.
When I say before in 1h is imposible valuet a student, because is posible that he know ansver, but is very nervous and forget her knowledge and later the exam he remember. It''s also true that, the examz are important, but the exams produced stress to the students. The exams are not the best form to evaluate students, because, the students stady a lot the exam and later they forget avery thing.
In conclutio, I agree whit this, too much importande is given to taking exams at school, and in my opinion it i necesary to reduce the exams and not to give much importance.