Last year here in my country, news circulated the whole of social media of a young student under the age of 25 who gambled away his school, then stole his friend's debit card and spent the friend's school fees too without the knowledge of his friend, when the school authority started asking their school fees, the friend learnt that his gambling friend had used up his school fees without his knowledge, he reported to the school authority, the case was pending final decision from the school authority when the gambling student went and committed suicide by drinking an insecticide.
Some students are addicts, and such student don't do well because gambling affects their studies.
25 ? A student, but also a fully grown up adult. If the person was really 25, it to silly to talk if he was irresponsible and did not understand what he was doing. Maybe that not a best example. Because a person can become a student at 50+ for example, and should we consider such person as a person who isnt ready for grown up life? A student from your example is a person who had problems with mind, not a person problems with gambling.