Also, IMO, if one waits till college to start learning critical thinking skills, s/he’s effectively fallen too far behind. At that point, even the best college Profs’ efforts to salvage such a student in one, few, or even 4 years worth of courses is likely to be a near Mission Impossible.
Colleges IMO are meant to refine and hone the critical thinking skills already learned from parents, teachers, other adults & peers, and life experiences and practiced during the first 17+ years before undergrad for most. Not institutions for critical thinking 101.