Neither my kids' school (schools, if you count elementary school too) nor mine is on the list! (I expected to see both.)
ML/NJ
Note the two Catholic schools in Ohio (and I'm sure there are more):
ST IGNATIUS BOYS HIGH SCHOOL
ST XAVIER HIGH SCHOOL
My high school on Long Island is not on the list and the H.S. my kids went to in MA. seems to be one of the only ones not on the list.
My son lives in CA. and the H.S in his town is also not on the list. Maybe we've picked some decent school districts.