I didn't use to watch old dramas but I made rare exceptions starting with this and I'm glad I did.

Definitely, it's not perfect. The fashion and camerawork are outdated. I wanted to shake Biscuit a lot in the first few episodes. And I fast-forwarded through some parts involving the students' lives (not as good as Gokusen) and most parts involving the "dry as a dishwater" second lead (the role, not the actor).

But man, Gong Hyo Jin and Gong Yoo together is such a sweet pair. I enjoyed all their moments and it's what makes this drama such a gem. So much so that I know I'll be rewatching their parts again even in crappy, illegal sites (since it's not available on the legal streaming sites I know).