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The second one is the Adventures of the Bailey School Kids by Marcia T. Jones and Debbie Dadey. Titles included Leprechauns Don't Play Basketball and Cupid Doesn't Flip Hamburgers.
Edited by FloydPinkerton
The first one sounds like the Magic Attic Club. They were written by a handful of different authors, and definitely had dolls that went with them. http://www.sherisinykin.com/magic_attic.htm
You're both right! Thanks!
Two series of children's books:
The first was a series aimed at young girls, which, if my very fuzzy memory serves me correctly, was about a group of girls and some kind of magic closet (or something - the logo for the series involved either a key or a keyhole). Each book centered around one of the girls entering the closet and winding up in another time and place in history. I remember it particularly because it was a tie-in with a line of 11" dolls, which, although I really wanted one, I never ended up getting.
The second was a series about a group of kids who routinely run into supernatural beings in disguise, usually at school. Said creatures ranged from typical supernatural fare (vampires, werewolves, etc.) to more unusual ones (I remember a Valentine's entry in the series centering around a Cupid being the new lunchlady). The titles of each entry in the series went along the lines of "[Monster of the Week]s Don't [Mundane Action]!"
Edited by TheToonGeekette