I had an ex that was placed in Father Lopez High School in Daytona Beach by her mother to keep her away from me. It didn't work.
She hated the school, hated the reason she was there, and hated her mother for doing it. She struggled in class due to the whole distraction of even being there. But man was she hot in that uniform.
She lasted one year, and then moved in with her dad in Rockville, Maryland where she graduated Magna cum Laude from Richard Montgomery High School and then went home to Stetson University in Florida.
Point being, not every kid benefits from the enviroment and academics of a parchial school due to the conditions that put them there.