hello for kids where can i get a photo id ? can i register my 4 yrs old with another identification as birth certificate?

You can get a kid their social security number very young and they need it to get paid. A photo ID possibly at DMV. Go to their website and see. It's a ,State of California ID.

Yes, there's a list of acceptable Id they'll take. Go to their page

Are school IDs acceptable for a 4 yr olds

Try to use their social security and the DMV might grant them a CA. State Id and the production company have to assigned a tutor parent or guardian during the shooting and they are limited to work less than 4 hour a day because of their young age