Ontario, Calif. ? A 14-year-old student was expelled from a Christian school because her parents are lesbians, the school’s superintendent said in a letter.

Shay Clark was expelled from Ontario Christian School on Thursday.

“Your family does not meet the policies of admission,” Supt. Leonard Stob wrote to Tina Clark, the girl’s biological mother.

Stob wrote that school policy requires that at least one parent may not engage in practices “immoral or inconsistent with a positive Christian life style, such as cohabitating without marriage or in a homosexual relationship,” the Los Angeles Times reported in Friday’s edition.

Clark and her partner have been together 22 years and have two other daughters, ages 9 and 19.