Should boys and girls be in separate classes in school? Why or why not?

Hello there Sir [이름]!

Happy Monday!

You made my day! Thanks for your compositions.

All of your ideas that you wrote below are right.

I was supposed to go to a girls school. However, I explained to my parents that it will be somewhat difficult for me to adjust in college.
It is because I will not know how boys behave. I might be bullied in the university.

Thanks for your time.

Teacher Nina

Before I raise a child, I didn’t think deeply on having boys and girls together in school.

>> correct

I didn’t actually look into or weigh the effectiveness or pros and cons of having boys and girls together in class.

>> correct

I thought separating boys and girls in class or school is old fashioned and stereotype idea.

>> correct

I couldn’t understand people who opted to go to women’s schools.

>> correct

I considered them being so gender sensitive and somewhat have prejudice about the coeducation.

>> Better: I considered them to be so gender sensitive and somewhat have prejudice about the coeducation.

However, now as a father of a young kid, I began contemplating on which way is more effective for education and help young kid grow with balanced view and healthy emotional development.

>> correct

When children go to middle or high school, they come to realize the differences in both sexes and show interest in the other sex.

>> correct

Many students spend focus on their appearance and start to put up make-up.

>> correct

Even dating between boys and girls start in school and they often cross the line.

>> correct

It\'s the golden time for them to study.

>> correct

Regreting is too late.

>> Regretting is too late

>> OR: It is too late to regret.