I think it is a useful thing to be teached in school too! I see it is very effective, because it targets real life apps and daily usage.. An example is the upcoming ARROUND project. This is practical because it aims to combine the augmented reality industry with blockchain. So as we may already now, there are many tuts about augmented reality, but with blockchain this will be more powerful! So, yea, crypto/blockchain is good to be teached..