@kokesaat
That sounds like a (nearly) perfect solution to me. Unfortunately, I'm living in a very remote location (surrounded by ricefields only - Phrai Bueng area, south of Sisaket). In the nearby villages I know many people, but no one who can speak any (or enough) English (even the teachers of the local schools really don't). That's why I started the thread, in the hope someone maybe know a potential Thai teacher in Sisaket (Khu Khan, Phrai Bueng, Payu would be ok too)...