Spending per pupil is not necessarily the right metric. The net spending accounts for paying for teachers who can't teach, overly priced contracts to the businesses connected to school boards, corruption, etc.
Net educational spending isn't even the right metric.
Unless we want to agree that spending $15,000 per pupil from a family with an income of $30,000 equates to the same education as $15,000 per pupil from a family with an income of $200,000.
It's not Switzerland, so you can't compare.