Yep, my S20 is at a HS where it is mandatory because it is a graduation requirement. Our school now does the SAT and it used to do the ACT. When he got a 1600 on the Nov 2018 SAT, I asked the school if he was required to take it in April 2019 with the rest of his junior class (in school). I was told he had to, due to the graduation requirement. If he was “sick” that day, they would have made him take it on the April school testing date when he was a senior. So he did end up taking it junior year with the rest of his class. It was kind of ridiculous.
ETA: Luckily it’s not included on transcripts anymore. However, one of the schools he applied to did require ALL scores from any administration of any test he took.