Education should be entertaining no matter what the subject is.
When I was at school my music teacher made learning to read music something fun. It wasn't easy - but I persevered and learned it. She inspired us. My swimming teacher was just a sadist. He turned something that should have been fun into a terrifying experience! But that was half a century ago and things have changed, right?
Well, actually - not that much. Kids are inspired by fun and imaginative teachers and will usually find interest in most anything in their worlds.
Edutainment gets a bad rap here for a good reason - teachers often use it as a crutch to stumble past their lack of subject knowledge and classroom experience and/or training. Also - subjects that are difficult for Thais (and English is a good example) absolutely NEED to be as much fun as possible or students will quickly lose their interest in learning if they are not.