Here is s partial list of schools that teach English language to Thais.   They are ESL so they often needing teachers to help teach.

A.U.A. Language Centre
      73 Ratchadamnoen Rd. – 053-278407

Australia Centre Chiang Mai
      75/1 Moo 14 – 053-810552-3

Baan Pasa 1 (NES)
      235 Chotana Rd. – 053-214640

Baan Pasa 2 (NES)
      2 Sirinthorn Rd. – 053-221764

British Council
      198 Bamrungrat Rd. – 053-242103

Direct English Chiangmai
      617 2nd Charoen Muang Rd. – 053-266 555, 053-245 069

ECC Thailand (Chiang Mai)
      15/73 Huai Kaew Rd. – 053-222028, 053-215151

EF English First
      Siripanit Bldg. 2nd floor, 191 Huay Kaew Rd. – 053-227131

Language Corner
      100/18 Huay Kaew rd. – 053-222587, 053-357148

R.A.C. Genius
      6/1 Samlan Rd. – 053-814715-6