What Checklist Do I Need to Change My Non-B Visa to an Education Visa in Thailand?

I think I have found my answer reading old posts and it seems that Robert and Todd commented on both. I am currently on a non immigrant b visa. An as I have read Robert has stated that once your visa is up you are on an extension and your work permit lets you say with the extension. So for what I have read from most of the moderators or the ppl that usually say the most here is that I will have to get a new visa (yes this means leaving the country) I know under these circumstance things are changing and the best way is to go in and ask. I have seen only things about changing from a non b visa to an education visa but for a Thai language school, but i will be attending Uni. I have looked at many Thai official consulate website and have found one document not on their website. Yes I do know the university will help and all of this but want to be prepared and try to get as much information as possible. My question is there anyone that can share a link on a check list of what you need to change visa’s inside of Thailand? I have found the checklist for the education visa. Before the keyboard warriors start. I have researched all of this I just want a link with a check list if there is one, I called the immigration in bkk with no luck of an answer and will be visiting my local one tomorrow as well.