YA novel with ghosts!!

I read this in middle school so somewhere between 2007-2009.

Premise, young girl is sent to a boarding school (all girls school) but it’s haunted AF. It might have been a little bit of a Victorian setting, but I remember it had me hooked and it was one of my first “stay up late way past bedtime to finish” books.

If anyone recalls this I’d be eternally grateful!!