Where I am there is 10 months of work, 2 off for summer. You get to choose. If you want (and are nuts) you can get paid only for 10 months, or as you said, choose to spread it.
They should direct their energies against the legislators who dictate what the teachers have to teach and how. Lawyers who have no idea what a classroom is like, yet pass laws that basically turn the school experience into a series of tests that kill any love of learning the students may have.