Tiana made me do this. Jk I would have done it anyway but w/e
Marcella: Marcella would be Ravenclaw. She's very intelligent and prone to intrigue. She's a little calculative and a fast learner, and not very good at getting her hands dirty. I don't think she's quite brave enough for Gryffindor, which would have been my second choice for her.
Danielle: She'd for sure be in Hufflepuff, but is terrible at socializing and would be completely overwhelmed by everyone there. She's not selfish and doesn't actively seek recognition in any way, and prefers to stay under the radar, which rules out Slytherin and Gryffindor. Ravenclaw would be my second choice, except that I don't think she has much of a thirst for knowledge. She is knowledgable, but it's more out of necessity than anything. I think her willingness to teach others at her own expense makes her more Hufflepuff than Ravenclaw.
Isabella: Isabella would be Hufflepuff. She cares about others and is more interested in having fun and spending time with her friends than anything else. I picture her wanting just a relaxing, stress-free life and not caring about much else.
Nicky: Without a doubt, Nicky would be Gryffindor. While she'll do whatever it takes to get what she wants, she's not very driven or all that ambitious. She wants to stay put and get laid, basically. Her bravery really stems from the fact that she doesn't fear much. She sees things as obstacles that she can overcome or ignore, usually both. She'd also play Quidditch and be really good at it, as a side note.
Piper: Hufflepuff. She's very patient and cares a lot about others, and just wants everything to be happy and peaceful. She's not too deep, idk. I love her but she's just chilling and being cute all of the time.
Peyton: Peyton is Slytherin, but not the way people usually associate with Slytherin. She has drive and ambition, so much that it carries her everywhere she goes. But she only has good intentions with it, more interested in achieving her goals than the glory that comes with it. She wants to learn more about who she is and why she is the way she is, which is why her studies are so rigorous. She wouldn't be in Ravenclaw, her desire to get what she wants (answers, saving the world) comes from the force that is Slytherin.
Ivy: Ivy is 100% Slytherin. She's very ambitious and not too adverse to lying, except for when it came to Violet. She'll switch sides as she sees fit and pretty manipulative. She has skills and uses them to get what she wants and is fine with stepping on a few toes while she does.
Natasha: Natasha is a lot like Ivy, and clearly a Slytherin. Her friends are more like disposable and interchangeable playthings to her. She's drawn to glitz and glam, hungry for a life of fame and fortune. However, she wants to get it the easy way and will use and abuse people to succeed in that. Unlike Ivy, I don't know if she's ever had genuine feelings for anyone.
Atticus: He's a close tie between Ravenclaw and Gryffindor. He's brave and brash, but he's naturally gifted with intelligence. He just picks things up quickly and could do great research and be a great teacher if he wanted to. But he doesn't, he just wants to go out and do what he wants. He's not afraid to rock the boat, and that rules out over his IQ, which makes him Gryffindor.
Caroline: Caroline would be in Gryffindor. She has a rough, 'fuck the haters' attitude, and doesn't care what anyone else thinks. She isn't weak and believes it's better to take action. She's a bit impulsive and brash, but would fit in well. She and Nicky would kick ass at Quidditch.