That happens in high school, too. I’m teaching my kids to learn how to write what the teacher wants to read. They have to make the decision as to what they value more: the grade or standing up for what they believe and providing factual info in their writings/discussion. As for college, when I was there, some profs didn’t want differing opinions regardless of whether or not facts were provided so that’s nothing new.
You’re probably younger than I am, since you have kids in high school, but this was NOT always the case.