"Students should bring a certain skepticism to whatever they study. They should question what they are taught instead of accepting it passively."

Yes, only then will their thinking process and their analytical skills improve.

Questioning what is taught is okay in senior classes at college level. The students should read contrary views on the topics and attempt own opinion. This is more true in subjects like philosophy and Logic. Osho had quarrel with his teacher on this issue in college. The teacher chided osho for arguing too much. Osho retorted that if you can't argue even in a subject like LOGIC, where you can argue. Osho had to leave the college.

The very purpose of education is to instil a spirit of self-inquiry and one must learn to question the question and even question the answer!