> These experiences I think just make people prepare/focus better. Change is good when it comes to environments of learning.

Is this change in environment actually beneficial though? One could argue that the social stress of such a change is detrimental to the students, as it forces them to focus more on the social aspects of their environment than the academic aspects. One could further argue that maintaining a consistent (necessarily smaller?) K-12 school environment is more beneficial as it strengthens the students' social cohesion, allowing deeper, longer-lasting relationships to form among the students themselves, and between the students and faculty/staff.