I've watched all of the movies mentioned above haha. Here are some other movies, romantic and school, less studying than other recommendations.
Gods of Study (Korean and Japanese ver)
Sassy Go Go - both studying, applying to college, and dancing
Kiyori Renai - student teacher love, but female char is really hard working to improve her weak subject
Bad Genius - ok this is about a genius at studying and cheating, but she makes me want to be smart like her (I don't recommend cheating though)
Age of youth - I haven't finished watching, but there's a girl who studies hard while working part-time, there's another girl who tries to balance study and social life.