Requiring school districts to spend comparable amounts on Title I schools is pushing on a string (Mark Dynarski, Kirsten Kainz, Brookings)

Of all the rules that the U.S. Department of Education will have to formulate for the Every Student Succeeds Act, the proposed regulations to monitor that states and districts spend comparable amounts for schools eligible and not eligible to use Title I funds are attracting the most attention. Currently, districts can show comparability based on the number of teachers per student. The Department has proposed that teacher salaries be used to assess comparability.

http://www.brookings.edu/research/reports/2016/07/08-requiring-school-districts-to-spend-comparable-amounts-on-title-1-dynarski-kainz