Norah do you live somewhere where they don't start school until older than 4? I know in some countries they don't start until 6.
I do think it's a good idea to get them out of the habit of a day-time nap well before they start school because they won't be able to nap at school - and an unbroken (if possible) 11 hours sleep at night when they do start school - ie 7pm until 6am is, I think, essential. When they start school at 4+, staying up until 9pm is not a good idea.
Speculation: Who Will Be In Burnham's Cabinet?
Someone I know shouldn't be driving. In my opinion.
Are You Finding the Hot Weather is Making you Short Tempered?
The government changed women's pension age and called it progress. Did anyone actually ask you?
but washes off in the rain).