My ds's pre-school has recently made some changes, very subtle I agree but they seemed to have affected both myself and ds.
The biggest change is that there are many more children there. The pre-school has received a good ofsted rating and has attracted more parents to it but I think this is actually having a negative affect on the once excellent pre-school that it was - same space but more children. Ds has come out of a couple of sessions complaining that there are too many children.
Another niggle is that before numbers increased, parents were allowed to wait inside the entrance to the pre-school, where there were a few toys/books to keep the dc's entertained. Now however, parents and children 3 and 4 year olds are made to stand outside and wait and no-one is let in until 9 am on the button. Then arriving late, parking is a real problem around the school and makes us later still. Likewise, with end of session. I feel this has depersonalised the whole experience and apart from anything it is horrid having to stand and wait - ds won't stand still and unless I arrive at 9.00 am he will run off and join the primary kids in the playground - get bowled over etc. little ones are often not good at waiting.
My worst gripe is that I collect ds at an intermediate time (after lunch) and every other child either leaves after the morning session or stays for the whole afternoon session. I use to be able to wait inside the pre-school for ds to finish activity and then extract him, it gave me chance to root through her tray etc. But now I am being asked to wait in the school reception and ds will be brought out to me. I have taken this as a slight as I am the only parent who collects at this time so it obviously only affects me and the school have known me for years. This is one of there new policies but this coupled with the other changes has really irked me so much so that I am thinking of cutting down ds's hours and sending him elsewhere besides the variety would do him good!
Can I ask you how much notice you are asked to give to change sessions at your child's pre-school?