USA: „In many states, the wealthiest districts spend two to three times what the poorest districts can spend per pupil, differentials that translate into dramatically different salaries for educators, as well as different learning conditions for students.“
Univ.-Prof. Dr. Linda Darling-Hammond u. a., Breaking the cycle of teacher shortages: What kind of policies can make a difference? In: Education Policy Analysis Archives Vol. 27 No. 34 (2019), S. 5.