Students are very much into gambling because of the amounts they receive as upkeep, if they are not getting enough cash from sponsors, they make an option to gamble with the little amount given to them, it happens this way not because they like to gamble with the risk but it is the only opportunity they can think of to add extra cash and still maintain focus in their studies without trying to do side jobs and spend time hustling outside. Gambling can only affect finances, but not regarding losing focus on studies.
Parents can prevent this from happening by choosing a different option to give to their student children. Not allowances, but food is better, especially if the school is near the house. That way, there won't be urges to gamble, and it's better if they are innocent about these things at an early stage of their life.
Now that many online casinos have opened and offering cheap minimum bets, it's really inviting to anyone, even the teenagers who are still getting little allowances will probably test it out. It's better if they don't know anything about it.