I’m a teacher, why do I get so many spam calls saying my teaching certificates are being revoked?

I get 3-4 spam calls from different numbers a day stating that my teaching certificates are being revoked and I need to verify all of my information. This has been going on for about a month. I’ve Google this to see if it was a common scam and I didn’t find anything. Has anyone else had this, or know why this is happening?