So these institutions should just take our kids pro bono? That's just not how it works. It's ultimately a business transaction between the public and private sector that is mutually beneficial for everyone. The school gets a larger student body to work with, and therefore more opportunities for advanced learning, extracurricular activities and clubs, additional curricula that aren't feasible with smaller student bodies; the public gets access to some of the best secondary education in the country without having to deal with the hassle of running its own school district, funding its own building and grounds maintenance, hiring and oversight, etc. The money the towns are spending on their education is the same money that they'd be spending otherwise to send them to some regional high school that they'd have to continually assess repairs and improvements for, and wouldn't even be guaranteed to provide a better education or growth outcomes for its students than the current model. It's just not a risk worth taking.