Heinz from Germany has been an English teacher abroad for several years when he decided to take his in-class TEFL training in Chiang Mai. He spent some time in Thailand in the 1980s and thought it was a good idea to return and take the TESOL training course. He thought the course was well balanced with easy modules and more challenging ones. Even though he had been teaching for years, he was still able to pick up new things during the course and was also able to improve his existing teaching skills.