IME, government teachers have at most 2 weeks of required work days during the summers: one right after school ends, one right before school begins. Depending on the state/ district, that leaves 6-8 weeks of summer break.

They also get more than a month of vacation during the school year: 1 week in fall, 2 weeks in winter, 1 week in spring, plus state holidays.

Even with mandatory continuing education (which many jobs require), government teachers are still getting a few months of vacation. It's not comparable to folks who have to work 11+ months every year.