Moving to Singapore? Ask our regular expats in Singapore questions on relocation and their experience here. Ask about banking, employment pass, insurance, visa, work permit, citizenship or immigration issues.
It depends I believe on the length of the course you are planning to study (not sure what the maximum is). I have heard of 1 -3 years validity. You will need a new SP when you change schools. For preschool, they may give a 3 year SP (nursery, K1,K2).
I've seen four month passes for certain courses. These seem to be for the non-name schools selling courses designed to provide Student Passes to those who live in places where they'd pay for such things.