Teachers will just leave. They have options due to what will be a decade long labor shortage (structural demographics inflicted). It’s why many school districts are starting to offer 4 day weeks to teachers; it’s one of the few retention mechanisms available for a terribly undercompensated role.
https://news.ucr.edu/articles/2022/08/03/demographic-dilemma...
https://www.weareteachers.com/4-day-school-weeks/
https://www.ncsl.org/education/four-day-school-week-overview
https://www.usatoday.com/story/news/education/2023/03/06/mor...