Thai schools

Often little or no experience is required to get a job in these schools - if you have a degree, a TEFL certificate of some sort and an easy going nature then you'll do OK.
Bear in mind this isn't real teaching - classes are large and noisy, exams are a bit of a joke - it isn't considered polite to fail students so every effort is made to ensure that the majority pass. It isn't usually particularly hard work, the salary is pretty good when you take into account the fact that you have your evenings and weekends free. However, if you'd class yourself as a serious educator then International schools will be more your thing.

For the complete listing of state schools which have their own website - and will therefore probably be happy, and rather surprised, to receive correspondence from foreigners - visit the SchoolNet website. This is a government project to get as many Thai schools onto the web as possible. The listings are all in Thai but a lot of the schools have pages in English. Over 3,000 schools are listed as having their own sites.
It's a bit hit and miss finding schools with English content on their sites but if you've got nothing better to do then try visiting a few sites. Let me know if you find anything interesting

In many cases the best way to get a job is to simply walk into the schools and speak with the Head of English in person - saves a lot of time and messing around.

Thai Private Schools

Adventist School, 57 Soi Charoenchai, Sukumvit 63 Rd, Bangkok 10110
Assumption Convent School, 436 Oriental Lane, Charoenkrung Rd, Bangkok
Assumption College, 26 Oriental Lane, Charoenkrung Rd, Bangkok
Assumption Suksa, 22-3 Oriental Lane, Charoenkrung Rd, Bangkok
Bangkok Christian College, 35 Pramuan Rd, Bangkok 10500
Joan of Arc Commercial College, 198 Rajawithi Rd, Bangkok
Khemasiri School, Charansanitvong Rd, Bangkok
Lasalle School, 23 Soi lasalle, Sukumvit Rd, Bangkok
Mater Dei School, 520 Ploenchit Rd, Bangkok
Pana Bhand, 681 Ladprao Rd, Bangkok
Phadungsit Phitaya Girls, 64 Techavanid Road, Bangkok
Ruam Rudee International School, 123/15 Soi Ruamrudee, Wittayu Rd, Bangkok
Saint Dominic School, 1526 Petchburi Rd, Bangkok
Saint Francis Xavier Convent, 92 Soi Mitrakam, Samsen Rd, Bangkok
Saint Gabriel’s College, 565 Samsen Rd, Bangkok
Saint Joan of Arc, 94 Soi Mitrakam, Samsen Rd, Bangkok
Saint Joseph’s Convent,7 Convent Rd, Bangkok
Watana Wittaya Academy, 67 Sukumvit Soi 19, Bangkok