Is nursery education required in school when my wife can provide everything at home? my 19 month child is learning alphabets, able to identify animals, fruits etc. I take him to kids of his own group and little bit higher age group for outdoor play...

I think nursery school is more of an option rather than something compulsory. I know lots of families who do not send their kids to nursery and they turned out just great. In fact, I didn't go to a nursery either. If you're teaching the basics and they attend play groups, I reckon that's enough. Plus, kids will be learning more during kindergarten. Don't worry too much about your child missing out.