Applying to grad school - Need to indicate history in previous not so good school?
You should disclose any previous schools when asked.

If you didn't like your previous school, that may or may not be a topic for the interview. However, if you choose to hide this information, consider the following:


did you transfer credits from your "bad" school to the "good" one? The admissions will probably ask where the missing courses are.
did you start in your "good" school from scratch? The admissions will probably ask what you were doing in the meantime.


Either leads down a rather uncomfortable conversation path.

On the other hand, if you are honest from the start, I imagine that the admission persons don't even care that much and won't mention it.

Bottom line, it is never a good idea to hide facts when applying anywhere.