It sort of feels like the math curriculum team and math classes must be meticulously walled off from everything else going on at the company, because everything else it does is immensely frustrating. The other reviewer on here who pointed out that almost no one in the top echelons of the company has any real corporate experience was dang right. Language Arts is a joke, basically a scam to make money. And everything related to HR, hiring, training, retention, etc., are very poorly handled at best.
Notice how the good reviews are all from part-time employees, and the bad ones from full-timers? That's not a coincidence. For someone who is just looking to make a few bucks teaching a fun math class, or as a grader, yes, working at AoPS is fine. But it's an awful place to try to make your career.
Particularly if you are full-time but work remotely, i.e. anywhere but San Diego itself, no one will ever listen to you. The company's poor organization means that major issues will go unaddressed, and important questions will not be answered. At the same time, major sudden changes will be announced without warning nor input.