We just went to look round a school which has an admission limit of 38 in YR and I think has had that for a few years, so larger years up to about Y2.
My experience of split classes was that you'd be in a form of 30, with about 1/3 from a different year. This does seem to be the case at this school, but on our visit today, the year groups were being taught together, so 38 kids, 1 teacher and 1 assistant. That seemed such a large group.
The member of staff showing us round was quite vague about what went on and it seemed massively confusing to me.
Is this how it works? There's just so much to take in on these visits and the other schools we've been to have shown us round at times of the day when the kids were in smaller groups so it's hard to compare.