mi keamcha yisroel – When I was in Yeshiva, we did have 9 weeks off. 2 1/2 weeks Sukkos Bain HaZemanim, 3 weeks Pesach Bain HaZmanim, and 4 1/2 weeks Summer Bain HaZmanim.
Do you realize that if you give Mesivta boys 9 weeks off in the summer, on top of all the other breaks, they have off almost 15 weeks a year!