Minecraft Coding Class

My 8-year-old is obsessed (obsessed!) with Minecraft and has expressed an interest in learning to code, so I’m looking for a way to combine those interests. I’ve found some Minecraft coding classes for kids online but am not sure which one to choose. Any recommendations for particular classes would be welcome. Small groups of kids preferable but we’d be open to private lessons too, if the teacher is really good. He’s in school full-time so it would need to be on weekends or afternoons. 
Thank you!