Is approval is needed to start a play school?

Yes, you need to get approval from elementary education department of India. Or if you want to get franchise from approved play school/ preschool/ with international standard, I would suggest you to go for Aerokids. I think this is the best kids school with creative ideas which children always likes and it has no royalty fee. You can spend only for initial setup. Check their website for more details www.aerokidsindia.com