Imagine trying to teach ~30 kids when there are 12-15 with an IEP (individualized education plan) with these rules in place. Inevitably, someone will come at me for blaming IEPs, but when they are being exploited in this way the quality of instruction absolutely tanks. Part of this was eliminating AP-standard-basic tiers of classes, so now everyone is in the same class. The "concept" is that kids that are excelling will help the kids that need help. (It does not work this way, the excelling kids get bored, basic kids get bored, chaos ensues.)
My friend, who loves teaching, and has been doing for a decade before this change, is counting the days to her retirement. She says that class has become Burger King, which is have it your way. She has very little say in how these are structured.
Districts love this stuff because it makes them sound like they care about students, but the reality is it's parents pushing down on teachers for better grades at the cost of quality. This doesn't challenge kids in any way, it teaches them that if you complain at the system you can have it easier. My friend has stopped bothering to attempt to change this and is going along with the program as the negatives have obvious career limiting side effects.
It's a classic DDoS / degradation attack.
Personally, it seems insane to me. I get that it's some kind of min-max for Stanford students, nothing like this existed when I was in uni (an eng college). We took our thermo exam, the average was a D+, and we liked it! Of course there was a curve, but the message I received was a humbling one. You don't know as much as you think you do, and you better think twice when building powerful things.