I enjoyed School 2017.  I don't think it was amazing, but I think it was good. I'm writing this because I felt like all the reviews either said it was incredible or bad. I don't have it in me to write a super long review though but here's a few things I found true for my watch experience.

I loved the romance between Tae Woon and Eun Ho.  I wasn't sure how the romance would play out between the main leads but I was pleasantly surprised with both of the actor's abilities and chemistry.  Their relationship was cute and affectionate and whenever they'd interact I felt myself grinning like an idiot.  I loved them. <3 I think their relationship made up for a lot of this dramas faults.

Personally I don't feel like it was quite as well done as school 2013 though.  I liked the whole X thing for a while but it kind of lost momentum for me.  I also feel like Tae Woon's whole backstory wasn't handled very well.  I didn't quite understand all the angst between the two main guys because it wasn't really Tae Woon's fault that things turned out like they did but his dad's.  One specific thing that bothered me is Tae Woon's father's sudden transformation in the last episode.  He showed no growth or change through all 15 episodes but then suddenly he takes a 180. Like what the heck. The last couple episodes in general I don't feel were done as well as the others but whatever.  Also the authorities in the school seemed really goofy but also weirdly evil. Regardless of my complaints, I enjoyed School 2017 and I was left feeling more satisfied than disappointed.

Overall I really liked this drama even if it wasn't a home run.  I would recommend it but I think you have to have a thing for school dramas to like it though.