tbh, I started this drama because of the casting lol (really I can't watch a drama if I hate the lead actors) In the beginning, the plot was interesting and new. Although a bit similar to School 2013, this story includes more mysterious storyline which makes it interesting. School 2013 focuses on friendship, while School 2015 focuses on family. love storyline of eunbyul, eunbi, ian and taekwang was really fantastic. You would never ever stop watching this drama at certain episode cos you really wanted to know how the love storyline goes on, as well as other incidents like the death of suin. However, I really HATE the writer that the romance story is open-ended. (OMG I really hate open ending, especially for romance stories). Anyway, some people may like open ending cos they couldn't choose which guy should be with eunbi. There are certainly some "bugs" throughout the drama, I just can't ignore these bugs -.- like how can ian run so fast from the swimming pool to the classroom? I know these things are not important, but ...yea these minor bugs make the story not perfect.....and not realistic The actors act really good. I first started this drama cos I think nam juhyuk and yook sungjae is handsome ...... Well, ignoring their appearance, they act really good. The two guys don't have much experience in acting, but they did a really good job. You will fall in love with them, definitely. KimSoHyun is always a fantastic actress, she has been participated in many many dramas. In School 2015. she further shows her excellent acting skills by acting the twin sisters. And, of course, I have to mention soyoung here (sorry I forget her real name). You would like to break your computer screen while watching her bullying eunbi, literally. There is one thing I'd like to share about the love line.....why not putting eunbyul with ian while eunbi with taekwang roahhhhhhh It's quite strange that ian finally chose eunbi, instead of eunbyul, whom he had known for more than ten years and had loved for more than ten years. ughhhhh taekwang's character is soooo nice and he is really caring, but why ----why eunbi refused taekwang twice..... I'm just not quite satisfied with the open ending.....other things are really nice^^ For music, honestly, I have never encountered any drama that I hated the music..... Anyway, go and watch the drama, it's a good one.