Wantagh Middle School 3299 Beltagh Avenue, Wantagh, NY11793 Wantagh Middle School serves students in sixth grade through eighth grade. The school offers numerous sports teams and…More extra curricular activities. Extra help is offered after school from 3:02 to 3:32 on Tuesday, Wednesday and Thursday. The Wantagh Middle School building is connected to Wantagh High School. The Wantagh Public Schools administrative offices are located inside the middle school building. The middle school's principal is Dawn Matrochano.