しっかりしないと高校を卒業できないぞ。の英語

If you don't get your act together you won't graduate from high school.

I will have to quit if things continue as is.

I will have to quit school if things continue on like this.

I hope that there isn't a high school nearby.

I probably will have to quit school.

I do not absent myself from school if I can help it.

You're not going to make it in time for school.

One must go through the preparatory course before entering the regular course.

It will be great to go to senior high.

If you start a school, do it on a firm basis.

I won't have you cutting school!

I have no objection to your leaving school.

You would do well to continue your education.

You are not going to make it in time for school.

You aren't going to make it in time for school.

You're not going to make it in time for school.

I want to leave school.

You won't be in time for school.

to finish school

I need not leave school.

Sometimes I had to be away from school for a long time.

not attending school and therefore free to work

I am going to quit school.

I don't go to school since that.

You must not absent yourself from school.

You must not be absent from school.

You will not want to go to school.

a condition of not being able to keep up with class work at school

to finish school―complete one's school course―（大学なら）―graduate from a university―（は英、米は）―be graduated at a university

You have got your priorities wrong, to say that you are so busy studying at cram school that you don't have enough time to do your school homework.