[1] Teacher strikes and walkouts have since increased in popularity outside of Pennsylvania due to the Red for Ed movement in 2018-19.
In suburbs and small cities, the National Education Association (NEA) became active, but it insisted it was not a labor union but a professional organization.
These states are Alaska, California, Colorado, Hawaii, Illinois, Louisiana, Minnesota, Montana, Ohio, Oregon, Pennsylvania, and Vermont.
South Carolina, Utah, and Wyoming have no explicit statutes or case law on the subject.
[6] A strike of Chicago Public School teachers that occurred in 2019 was significant enough to garner support from national politicians.
[12] Strikes involving public school teachers have occurred in Saint Paul in 1946 and Minneapolis in 1970.
However, since 1992 state act 88 gives the Pennsylvania Department of Education the power to order teachers to return to work to ensure that students still receive 180 days of instruction.
[1] A major cause of strikes in Pennsylvania is that contracts are frequently allowed to lapse for several years before the school board and teachers union can come to a new agreement.