If you are interested in taking Thai cooking classes when you visit Chiang Mai, check out The Organic Cooking Academy at Prem Center run by award-winning author/chef Su-Mei Yu.  http://cooking.premcenter.org/content...  Perfect for children and families.  Focus on techniques and traditions of Thai cooking from the market to the kitchen.  You will love it!

Siam Rice Thai Cookery School. Each day-long class has a different menu, and includes cooking instructions, a market tour and transportation, recipe book, eating the meal you prepare and a certificate of your achievement. Pot, the teacher is friendly, the classes are small and the food is delicious.

Also you can visit the Chiang Mai Thai Cookery School. They have been providing cooking classes to students from all over the world since 1993.

You can check "A LOT OF THAI home cooking class" They have an intimate class.Yui is an instructor and owner , Kwan ;her husband designed a nice cook book.She has a unique style of teaching,has experience in cooking for long time. They have different menu,balanced and you can be a chef with "know how" in one day. They have a lovely VW 1974 van to pick up. Class run at their house : homey atmosphere . The school established in 2001.

Another option just outside of Chiang Mia is Chiang Mai Kitchen Thai Food Cooking School.

Sompet Thai Cookery School has been around since 1997.  There are several different classes with different menus to chose from.  The class size is limited so you won't get lost in shuffle.  Discussion about ingredients and possible substitutions are very helpful.  Take one of the standard classes and you'll cook yourself breakfast and lunch.  You'll be amazed at the delicious Thai food that you cook. NOTE:  There are changes occurring at the school currently (Oct. 2008) - classes are outside Chiang Mai.