I went to Room 401 of school for sherry's CG, but still couldn't find anyone to trigger it.And,I couldnt find the cg of Doctor.
Classroom 4-1 its for Taylor, she's not on the game yet. Sherry's animation unlocks after finishing Kent quest. Dr.blight is related to finishing elder thundergirl quest, once you have the special lamp in your possesion.
Thank you very much.