Thinking about exams

I tend to believe that exams have more negative than positive effects on students and their education.

Today, many parents want to secure a good future for their children in this world that is full of competitiveness.They believe that if their kids are to get a higher education, depends on they must get good exam results (You could use 'depends on' without 'if' in the previous clause.  For example: They beleive that their kids getting a hgher education depends on them getting good exam results.). To help their children score a good mark in the exams becomes a priority to them. So they cost spend (Things 'cost'; people 'spend') a good deal on their children's tutoring lessons and remedial education. Over time, the students would ('would' is used for hypothetical situations, whereas you're writing about a real situation) can be in a state of  begin to feel under a lot of high pressure. They may even believe that examinations are the purpose of learning.

However, a good education should, among other things，train you to think for yourself. The examination system does anything but that. What has to be learnt is rigidly laid down by a syllabus， so the student is encouraged to memorize. Examinations do not motivate a student to read widely， but to restrict his reading； they do not enable him to seek more and more knowledge，but induce cramming.

They lower the standards of teaching，for they deprive the teacher of all freedoms. Teachers themselves are often judged by examination results and, instead of teaching their subjects，they are reduced to training their students in exam techniques which they despise. The most successful candidates are not always the best educated. They are the best trained in exam techniques.

But I have to admit that, for the time being, examination is the most effective and relatively fair way to choose talent. We can get to know our defects in learning (Or the weak points in our education) via exams, which will promote ('encourage us' is a more normal phrase here.) us to improve our studying methods further. And, to a large extent, exams develop our sense of honor and competition, and also could help us commit the knowledge to memory.

Therefore, I think how to make the examinations more scientific is a very important question.

This is really well written. Nice one!