I was expecting a comedy. How wrong could I be? But over the whole series there was in fact quite a lot of comedy mixed in. The huge contrast of comic and tragic in the same drama seems quite strong feature in Korean dramas like this. The plot of corruption in high places was not original: the idea of mom becoming a student is ridiculous but to my knowledge is original. Both heroes ・heroines and villains played well, with special mention for Kim Hee Sun with stand-out performance as mom and the dastardly villain Park Young Kyoo as Chairman Hong Sang Bok~~ almost a caricature villain ~~ who kept up the shouting to the end and came to a fitting end. Go Soo Hee as Han Gong Joo and her cross-dressing minions were hilarious right to the end. Really there was not one character who did not act well. One very interesting theme I noticed in this drama was the transformation of "nasty" characters to good ones as the story developed. I am thinking especially of the students Go Bok Dong and Hong Sang Tae ~~ which I found very hard to believe. Bad characters do not suddenly change to saints in real life. Applies to some adult villains too. But the villains who stayed villains were far more convincing [especially Hong San Bok]. There was great suspense and I watched last 5 episodes in one go, which is a first, so it must have been good. Not so happy with the music which I found too hyper emotional and intrusive, except the music for the comic parts was good. Knowing the story, not one I would watch again but highly recommended.