The school has no issue with me teaching anything blockchain-related. I had already taken that up with my bosses before attempting. Remember this is only for a total of 2-3 days over the entire school year.
My students certainly do not have any dev experience outside of using coding dot com. As far as "just teaching them the theories and concepts of bitcoin", theories and concepts do not make for a very exciting project. Especially the day before Christmas break.
what about the parents? have they been informed about you teaching the kids about blockchain aside from the subject that you actually teach? I admire that you try and teach and introduce them to blockchain and cryptocurrency but knowing how parents can be sensitive(sometimes too sensitive) to what teachers teach in school, I'd be surprised if all the parents of the kids that you teach are ok with it.