I did the same in New Zealand and it was a massive hit with the kids! Great site with a series of tutorials, in browser barebones Minecraft game to see the results of your code and a great full version Minecraft setup with dedicated worlds where the code is loaded as book objects inside the game. HIGHLY recommend checking them out: https://www.learntomod.com/
They also offer free teacher and student accounts with the ability to limit time. Can't say enough positive things about the service.