Can I Convert My ED Visa to a Non-B Visa Without Leaving Thailand?

Do you have a sticker in your passport that is a VISA or a stamp for extension...?

the confusion is people say they have a Non-ED visa BUT in reality IF they looked in their passport they would see that the stamp says "extension of stay permitted until xxxx" with a date :O

That is NOT an ED visa, :(

AND

you can cancel an extension of stay for one reason and immediately apply for a new extension of stay for another reason, (Like education to working)

BUT

it takes coordination between your uni (to get the documents to cancel your extension) and the new employer (to get the documents to apply for the new extension) You do it at the same time. Cancel one extension, immediately apply for the new one

Hey, I’m a student here too. I’m fairly confident that we would need to leave and re-enter for a work visa

You can not change the reason why you got an Non Immigrant Visa in your passport.

You might be able to cancel your current Extension of Stay based on education and directly apply for a new Extension of Stay based on employment. But for that your employer needs to meet the requirements at the local Immigration Office, Best is to talk with your employer.