I think they can understand the statistics of bitcoin investment or trading with some effort and learning.
While a formal education in statistics or finance can be helpful in understanding the intricacies of bitcoin investment and trading, there are plenty of resources available online that can help beginners learn the basics.
I think if he could already read and write it would be enough to understand Bitcoin. The school only gave evidence that he had never given the school gave no evidence he would master. So understanding Bitcoin crypto is not necessary to go to school, read, see and practice will make him understand.
Even though I never knew so far, is there anyone who can read and write without school. But as long as I'm familiar with bitcoin crypto, there are very few parts that I can use to get involved in crypto. I got more knowledge from reading and seeing.