Absolutely, but the PTA at the higher performing (higher income) school pays for additional educational programs, like art, second language, science, etc. This

Absolutely, but the PTA at the higher performing (higher income) school pays for additional educational programs, like art, second language, science, etc. This amount is referred to in the PTA language as "the gap" in public funding for basics. At the low performing school, the extra public funds received are often paying for support staff for serious social issues. There is little budget for the "nice to haves", and even when there is, the school staff has it's hands full managing the basics, so it's not always effectively utilized.