It is not bad, neither is advisable for parents to educate their kids on bitcoin in their early age, they should encourage them to study more and focus on their education that is the most important thing for them to do, they can learn about bitcoin when the right time comes, you can teach them every single thing that they need to know about bitcoin, it advantages, disadvantages, important and also the benefits of bitcoin, if a child is still young, he will not take it too seriously, but if they are old enough they will be able to understand your points of view. Better still if the child is wise enough, you can ask him whether he will have interest in it, if he is interested in it then you can educate him on it.