I'll admit "some schoolteacher" is doing some heavy lifting here. It shouldn't be that close to begin with when you remember that school teachers need extra license/acreddidation (so, more post secondary education whose costs run rampant) and arguably have a much more stressful job.

>there is definitely low hanging fruit to improve the American teaching system.

Sure, you can patch the window up and make sure it at least tries to protect from the elements. But we should properly fix it at some point too. How many of those kids would have not been held back if they had a proper instructor to begin with? Or an instructor that didn't need to quit midway into the school year in order to find a job that does pay rent?