No, not in school. None of the songs were religious.
There’s a tradition of ‘eisteddfod’ which is maybe the oldest known cultural competition. It extends really from bardic tradition when all stories were essentially songs or poems. In Ireland it is probably better represented nowadays in the pub music, in Scotland by the ceilidh and the focus on Burns’ poetry.
On St David’s Day we had a half day of school, no lessons, the morning was eisteddfod, everyone took part either in singing, dance or reciting poetry. This extended to a national structure where we had local, county and national competition. My entire class came second nationally in choir, no auditions, everyone in the year was in the choir.