Lols, how about you as a teacher did your performance turned bad? Crypto is indeed very addictive. Even me as an employee, I was suspended because my manager saw me trading at Etherdelta lols.
The solution is talk to their parent. Tell whats wrong in their child.
As far as I can observe being a teacher, I am definitely happy that my students are involve in cryptocurrencies and they earn for themselves and help their families. But, their school perfomance is getting worse. Please give your thoughts how will you help students to earn and at the same time it won't affect their school works?