The USA spends $15k/student annually which is 30% higher than the global median. Why do U.S. schools have "fundraisers" where kids are incentivized to sell stuff to people?
You would be incorrect. Many wealthier high schools put a ton of money into their sports facilities and equipment. Several HS in my state operate 10-thousand-plus-seating stadiums that look a lot like collegiate or semiprofessional facilities.
Wrt 1, teachers buy out of pocket and request classroom supplies such as tissues, chalk, pencils, erasers, notebook paper, art supplies, graph paper, compasses, protractors, safety scissors, glue, , hand sanitizer, etc