The students in high school while they study their subjects are limited and unsuitable for future studies.
Change this around. It tells me that the
students are limited and unsuitable for future studies. I don't think that's what you mean.
Second paragraph, I didn't understand any of that. Give some examples, please, so I can know what you're talking about.
Last paragraph, while you are making suggestions: the government really should make laws about what
must be taught i every high school, and anyone graduating from high school who passed these is eligible for university studies.
I think you have everything in your paper, it just needs to be reqorded so that everything is more clear.