1 Year Non-Ed, Multiple Entry - Need To Report?

[TheTraveler]

I have a 1 year multiple entry Non Immigrant ED visa issued by my home country. I spoke to the language school and they gave me some strange answers so I'm a bit confused.

1. Do I need to report to immigration every 90 days? (I'm assuming no because I'm not staying longer than 90 days at a time. On the other hand, I know they are quizzing or speaking in Thai to ED visa holders. But I thought this is for people staying more than 90 days at a time in the country)
2. At the end of my 1 year visa can I start doing the 1900 baht 90 day extensions like you would the single entry 90 day visa? (As long as I'm studying 4 hours a week). If so, what are the chances of getting it extended for 1 year instead of 90 days?
3. And if it's extended like this, is it still multiple entry or do I need to start obtaining reentry permits to leave Thailand?
4. I don't plan on this but - Now that I have this 1 year visa, what happens if I stop attending school? Is it still valid for a year?

Some questions I had that were already answered by searching the forum:

• Before the 1 year is up, can I do a visa run and return before it expires to add another 90 days, so I'd have up to 15 months on this visa? Answer: Yes
• Do I need to extend my visa every 90 days? (I plan on doing border runs. I know this is a silly question but the school thinks I have to pay 1900 every 90 days which is odd. I'm assuming NO because it's a 1 year multiple, and my stamp is for 90 days which means I do a visa run and not an extension). Answer: No need to extend during the 1 year but must do visa runs, from reading here http://www.thaivisa....ed-but-confused

[lopburi3]

No you do not report to Immigration if using 90 day entry.

Yes you should be able to extend near end of any 90 day entry if school/paperwork is accepted.

For travel on extensions you would need re-entry permit to keep stay alive.

Yes the visa remains valid.

[TheTraveler]

Thanks for the quick reply!