Will it be harmfull for my site to put too much repeating keywords?

I have a site which is like a network for my university's students. For now, i am concentrating on putting previous year question papers as i know that students search for them online. So there is not much content on the site. Now with every paper, i manually enter the meta data. Now i feel like i am having too much repeatition in the metadata with some words like "question paper" and "ip University" occurring again and again, within the same page and across all pages.
So how should i decide upon my key words??
For eg, i think there might be 2 possible keywords that the students might be searching for - "ip university exam papers" or "ip university question papers". So should i repeat the word "ip university" twice or more within the same line, like "ip university exam papers,ip university question papers,ip university previous year papers" or should i keep it like this --> "ip univeristy,exam papers,question papers"

I have a vast number of papers but dont have various keywords to avoid repeatition. So is this ok that i repeat keywords for different papers or i should do something about it.