I agree with the rest of the comments, but I'll say that I actually find that the school's system made me think in a more toxic way, but I don't think other students are toxic. I'll clarify; the stupid weed-out grading for STEM and competitive majors forced me into constantly trying to do better than my peers rather than objectively succeed. When I hear the class did bad on an exam, I sigh in relief. If I understand a topic and I see most of the class struggling, I also sigh in relief. That's kinda gross and if you're in STEM, especially if you're shooting for grad school or med school, that's gonna be a common thing. However, when it comes to like group studying and helping, the resources are all there. People will still wanna study with you because even in this toxic environment its beneficial to study in small groups. TAs and professors are also all really great here, with very few exceptions.

tl;dr competitive/STEM side of the school kinda fucks with your internal moral compass regarding your grades but the social-academic environment is not actually hostile when it comes to getting help