Ok so I remember I read the description of a drama on MDL before and this is what it was like:

Main character is a girl that somehow ends up either gender swapped or switches bodies with a boy. She encounters a male classmate at school and I think they develop mutual feelings even though she is a "different person." I think it was probably a fluffier and more slice of life-esc story that takes place in a high school setting. I don't remember the country it came out of either, but if I had to guess then probably Thai or Korean.

Please help me find it. 

 MrsCopenhagen:

Could it be: 18 again?

I looked at the descriptions of 3 dramas and none of them are ringing a bell for what I'm looking for.

Sorry then I dont know any Korean drama or Thai…. But maybe it is Chinese? When you be me has a high school theme…