@Annette ********
and the answer to that is
IF your husband is on an ED visa for a university degreed course you could probably get matching extensions,
BUT
I know no people who were able to get their family matching extensions when they had an ED visa based on studying at a private school ๐
Talk to the school your husband has the ED visa from and see what they'll say. They will know for sure if you can or can't do it