It's a great idea that we can teach cryptocurrency in school but I think it is good that it is in highschool rather than in lower years. So they can know how and what cryptocurrency is and they will know what its effect in the current economy or the gains of using it.
Its the technology behind cryptocurrency that matters not the coins. Blockhchain is newer though it can be taught under the computer science curriculum.
If blockchain is taught there will be a lot of projects coming in the future that is more powerful than what we have right now.