We had to do it too recently. It doesn't feel nice but... Everyone has to go through it all the time. Childminders are totally used to it. Kids come and go all the time for various reasons. You can just say thank you and move or you can be honest. We just said thank you so much. It's been great for the time being but we feel our little girl has outgrown the size of your space and as she is growing up so fast we think a nursery is the next best step for her. You can also say you have chosen a school for her and the school would like her to be in their nursery at least 1 year before be reception and thus you think it'll be easier just to move her now anyway. (that really happens!).
I feel nursery provided ALOT more for my daughter in terms of education than a childminder. Our CM was really just keeping her busy, looking after her and taking her for play time. Where nursery spends more time in educational activities combined with play. From my experience anyway. Your CM would be fine and nothing awkward. They are used to it.
Agree with all above. And yes, we moved out from a childminder too. Our needs outgrew the childminders capacity to provide. Our child is thriving. And 3 is a perfect age to move into a preschool- they learn those essential life skills in a bigger environment. Oh and I remember- when I mentioned we were leaving - CM was accepting and said - it is a revolving door - kids move to the next stage of life.
We had to do this a while back and we just said he's now got a space in the attached nursery to the school we want him to go too. She was fine with that 😊