Beautiful dark secrets

It's about a few like three orc four main 11th graders in high school they are all.They all have something special about them that you will come to realize .All main characters get their own chapter pov.Are first main character is very kind and sassy and many other things. and she is very important to the plot without her the story and plot would not be here so thank her.THIS BOOK WILL NOT HAVE CURSES.So a group of teens are harassed and other things by this person that named themselves as BDA and the person knows everything and will do things really bad .