They had kids learning how to build websites when the dot come boom took off and that failed. I think its a good way to try and educate and reach kids with new tech, but high school I think is to early for it.
It is a good idea to teach high school student about cryptocurrency. It will them survive in the real world . They will know the reality than what they imagine right now. Some of them still depending on their parents. Instead of teaching them early childhold development, sex education or playing games online it is best to teach them how to a living in an early age.