They don't take any bugger in teaching you know they want a degree in English now with English as your first language and I know because I've been teaching here for 15 years and things have changed!
If you're stopped by police for any reason and are overstayed by even 1 day you will be put in jail until someone turns up with a ticket out of Thailand then escorted to the plane without a wash or change of clothes in handcuffs and banned from re entering for an unknown period. Do you think it's worth it?