When I was ten, we moved back to Italy and I spent my 5th grade year in a school run by nuns. In Italy at the time (maybe still) elementary school teachers tracked up the grades with their students from 1st to 5th grade, then cycled back to 1st for another batch. So I found myself in a class that had been together and with the same nun since 1st grade.
They had been praying in class every morning since 1st grade. Well, a couple months into the school year our nun said we wouldn't be doing that any more--we were old enough now to be responsible for saying our own morning prayers at home before school.
Some of the girls protested, saying they'd forget, but she stuck to her guns, suggesting ways they could remind themselves if they wanted to.
I've always remembered that.