on my college application it looks like:last school/university attented: (my high school)prior education: (would this be my middle school?)degrees: (obtaining high school diploma?)
There should be a section where it asks where you went to high school. If not, put your high school in the "Last School/University Attended" and do not put anything in "Prior Education". Colleges do not care about your middle school or elementary school days. For degrees, yes, you can put your high school diploma (but only if you already have it).