Are Colleges like ST.Xavier , Trinity or KMC overrated?

There is a trend to study in the capital after SEE. 10 of thousands of students goes to KTM after 10 ever year for their better future. Doing anything to get into colleges like XAVIER ,KMC etc. Is it only a trend to follow? Coz I have seen some students going to KTM for their studies despite their family poor financial condition. Is there are no colleges in Nepal outside the valley?