A California Christian school rejected a kindergarten student because she has two mothers, KGTV in San Diego reported. The couple planned to find an attorney in order to file a civil lawsuit against the school, the station reported.

The 5-year-old girl had attended summer school and preschool at Mount Erie Christian Academy in San Diego, but a pastor reportedly told her two mothers that she would not be permitted to the school for kindergarten. Sheena -- one of the girl’s mothers, who did not reveal her last name -- called the conversation “heartbreaking.”

"If we knew from the beginning that this was unacceptable, they didn't condone or believe in this, if it was such a big deal, we would have never started her off there," Sheena told KGTV. "I would never put my child's emotional well-being in an unstable setting like that."

A woman who identified herself as the director of Mount Erie reportedly told KGTV that although the school has a nondiscrimination policy, “The Bible says homosexuality is a sin. We don't condone any sinful lifestyles."  

GettyImages-480658352 A pedestrian crossing signal shows a lesbian couple at a junction in Munich, July 14, 2015. Photo: Getty Images

In the school’s handbook there is a passage that reads, “The school reserves the right, within its sole discretion, to refuse admission of an applicant or to discontinue enrollment of a student. This includes, but is not necessarily limited to, living in, condoning or supporting sexual immorality; practicing homosexual lifestyle or alternative gender identity; promoting such practices; or otherwise having the inability to support the moral principles of the school,” Salon reported. 

Since the school is a private, religious institution, it has the right to discriminate on the basis of sexual orientation if that is part of their religious tradition, said San Diego attorney Eugene Iredale, KGTV reported.

"Now the question is where do you draw the line?” Iredale asked, KGTV reported. “If you have a religion that believed in human sacrifice or amputation of the arm or the hand for theft, would we permit that in the interest of permitting the free practice of one's religion? I don't think so, and one could argue that psychologically ... this is as devastating to the little 5-year-old girl as some of those other vicious practices."