Children going to nursery schools would be taught the following things-
on the first place
*identifying alphabets and numbers and saying orally
*identifying and saying general things like fruits,vegetables,vehicles,animals etc.
*identifying shapes and arranging them in certain play activities
*speaking and understanding little commands like goodmorning,thank you,sorry etc.
and in the second place
*getting started with writing, starting with standing,slanting,sleeping lines,circles,semi-circles which gives them the basic training to write alphabets and numbers.
This is the basic curriculum.But still it varies from school to school.As most of the above things will be learnt at home,they can very well cope up.