The Supreme Court of the United States has held that a state may exclude aliens who have not declared an intent to become citizens from teaching in public schools.
Ambach v. Norwick, 441 U.S. 68 (1979).
Gwendolyn M. Robosson,
Constitutional Law - Fourteenth Amendment - Equal Protection - Aliens' Rights - Governmental Function Doctrine,
Duq. L. Rev.
Available at: https://dsc.duq.edu/dlr/vol18/iss4/8