To be honest, I might be the only one who feels this way but I don’t see how this is necessary. Which money would they use to invest after they’ve been taught?
If your pipsqueak brain would think instead of talking nonsense, it wouldn't think about whether it's necessary or not, it would think about how positive it is. There are many things that are not necessary that have a very positive impact on society.
In this case I thank the OP for teaching about bitcoin in that school on his birthday. I live in a developed country and I can't even imagine something like that happening here. I'm sure we would have complaints.
As far as I can see that school is in Nigeria, and although it is a less developed country, and despite having a government against it, the use of bitcoin is quite widespread, so as soon as those students get their first jobs it is very likely that they will use bitcoin.