A potential exodus of older educators susceptible to the coronavirus and those with existing health problems may fuel already high turnover. A full third of teachers told Education Week they were somewhat or very likely to leave their job this year – compared with just 8% who leave the profession in a typical year. Many substitutes also may quit. Now, new restrictions on foreign visas will make it harder for some states to import teachers from other countries to work in already hard-to-staff positions.