Is it possible create forms with dependency between two contact fields?

We need to create forms with dependency, since our business is about schools with 63 sites but not all of them have the same grade (In Peru there are 14 grades or levels of studies).

For example, in our site A we only offer the 6 grades (from 1st to 6th grade). Therefore, if in the form, the parent selects site A, that in the following field, which is the grades, the 6 grades offered by site A will be shown, but not the 14 grades of studies.