What are some good Korean dramas that involves school life?

I would like some recommendations as to Korean dramas that is about
school life(so, high school and college) I would prefer the drama be
romance, or romance/comedy, but it's fine if the drama isn't. I have
watched: boys over flower, playful kiss, dream high, you're beautiful,
and am currently watching city hunter. So, feel free to recommend any
dramas that are similar to these.

However, the drama has to:

1. Be fairly recent - 2009 to now, would be best. But it's fine if the
quality of the drama is good.
2. Good-looking leads - the main character(s) have to be good looking!
:D

Please help! It would also be nice if you could give a brief summary
about the plot, but you don't have to!