I'll allow it just for the sake of actually having a good life even though they had a baby during school years.
For whatever the reason was (which is a rumor, no idea if it happened or not, nor do I know when it happened), my christian school decides to kick out one couple who had a baby, instead of letting them putting down their child for their grannys
As a result this hypothetical/real situation leads them to possibly never getting back into other school, and will therefore have a worse future due to that kicking out. What an unreasonable choice of you, Principal.