they might be using the same as the school. we dont as a rule, leave it to school! we start off with name recognition, gross and fine motor activitities and recognisning that print carries meaning - i.e. having words up all over the place naming things, providing books and pens and paper for pre wiritng to emerge.
we leave the formal "worksheet" to school and we are all happy with this (school and us) we have a really close relationship with the local school and have liased with them on this again recently as many parents want thier children sitting down with a worksheet far too early.
it is better to play the lotto games, read books etc at this age