If he's doing the CCRS cert then that's not the gateway to becoming Catholic. He'd have to wait till Autumn to do another course that wouldn't see him received until Easter Vigil 2019. If he's on that course already, then he will have discussed with the Priest why he wants to be Catholic etc. So it'd make sense him being received Easter Vigil 2018.
But the CCRS if that's what he's doing just introduces nine Catholics to the religion. Maybe he's thought I really want this in my life,
The way a Priest would explain it is that he's been touched by the Holy Spirit and it's stirred something inside him.
Even though you work in a Catholic school, you seem to have misgivings about the faith, that it'll impact your life, you'll end up with 10 children and so on. That really isn't the case. At a blessing the Priest would say you're open to having children, those children ideally will be baptised Catholic.
It's seldom at church you see families with more than 2/3 children. So you're not going to be turned into a baby making factory.
What worries you about this?
I became a Catholic as an adult, my faith means so much to me. The story of how I became a Christian is unorthodox, I've resisted anti Catholic sentiment for 12 years if not more.
The funny thing is, even in modern day Britain, it still seems taboo to consider the Catholic faith. Where realistically if he was CofE it'd be pretty much the same.