I'm in villiage fair at the moment but I'm suppose to be in the 9th grade right now. When I was in the 7th grade I didn't go to school the whole second semester and when I went back at the begging of 8th grade year they put me back in the 7h grade. So I'm trying to see if there's some way I can get in the 9th grade by second semester?

That would be something you and your parents have to bring to your school administrators. Typically you may be asked to take several placement tests to see if you can even qualify to be able to do the course work for that level, and keep up with the rest of the class. Have you been going over the things you missed when you were out of school?

Your age has nothing to do with what "grade" you are suppose to be in.
You did not finish or complete the 7th grade. You have to finish the 7th grade and learn all of that material.

By staying out for one entire semester (did not say why?) you have to go back and finish 7th grade.
So the 7th grade is now your correct grade.

Why do you think you can go into 8th grade if you did not do all of the 7th grade work