Can I bring my wife and child with me on an ED visa to Thailand?

Hahahahahahahaha

Your child can enter as a tourist/exempt and then overstay without penalty. The wife is the issue (they always are). You can leave her behind, or she can get her own visa. Depending on how long she might be able to play the bounce out game.

You will need to do a degree/masters/PhD at a university and find a university that will support the applications. Language/Muay thai/Cooking etc schools can not support dependency visas.

They told us that technically we could just allow our children to overstay since there’s no fine you have to pay.. BUT it will be marked in their passports. The best solution that we could come up with was a multiple entry permit & do border runs for the children so that they don’t have an overstay. Our children are old enough to be put in school though so they’ll have their own education visa. I saw that you said your child is only 1. The school we were looking at has a nursery program and our youngest is 2. They told us with putting our youngest in nursery at the school, they can do a visa for him as well. So while a language school can’t do it, you may have options with an international school

If your child studies in Thailand, he/she can apply ED visa and your wife get a guardian visa as the mother of your child, while you should apply another visa seperately. 1 guardian can be only for 1 child. The school will provide a letter that you need to apply Guardian visa for your wife. Works also if you want to be the guardian and your wife gets another visa.

How are you relocating on a visa that is going to max out in 13 months? You will need something much longer term than ED.

Currently no schools can offer any dependent visas as far as I know.

An education visa from an informal school does not let you bring dependants to Thailand. The only ED visa that might let you do that is one you get from a university when you're in a degree seeking program. Even then you need to get approval from your school also.