Yes, they have changed to scoring to make scores higher, for the same performance, than they were a few decades ago. Average scores are still down, though, even with the inflation.
Statistics show the students admitted to education majors have among the lowers, if not the lowest average SAT/ACT scores. However, that doesn’t necessarily carry over into who actually becomes a teacher. Some teachers were not admitted to college as education majors, and some students who were admitted as education majors don’t become teachers.
As I said above, I think the designers of the program wanted some kind of numerical snapshot. It’s possible that a lawsuit would have resulted no matter what number was used.
Likely, in fact.