No, Catholic schools will consider all students regardless of their religion, if they are willing to abide by the school's rules.
saint Marys Catholic school in Trenton Ontario
st.josephs catholic school (brampton,ontario,canada)
No. I go there.
She attended Chesley District High school in Chesley, Ontario (Wikipedia)
Colony high school in Ontario California class of 2008.
Central Catholic High School in Pittsburgh
Elder High School, an all male Catholic high school.
Mary Ward Catholic School
wexford collegiate school for the arts, scarborough, Ontario Canada
Santa margirita catholic school
queen of peace catholic school
Archbishop Wood Catholic High School in Warminster, PA.