Introducing the Blockchain principles to students is actually really good. However, In my opinion it will not properly work if we are going to add this on the Elementary and Jr. High Curriculum as it can be mandatory for all students to take this certain subject but can't actually help them.
Therefore the best option will be introducing it to Sr. Highs and in College. In which students will be able to choose if they get interested with this curriculum by that we can assure that students who were in the curriculum are interested and are willing to learn the blockchain technology
That is good that they have some knowledge about blockchain, especially today that its gradually recognized and its already popular in any part of the countries. Maybe its appropriate to teach who has already at the higher grades or even in secondary level, because they can easy to understand.