Is your high school accredited? A no answer would be the only explanation I can think of, other than pure coincidence, as to why that may happen.
I would check out your school profile to see what is on there. It is up to the rejected applicants to have their guidance counselor call the college and find out where those apps fell short. Encourage them to do so, and hope they share the information with you. You should also express your concerns to your GC. S/he can’t tell you what is going on with other students’ applications, but s/he may have some insight of which you are not otherwise aware.