One of those factors that affects the decision making of such student, thinking that gambling is a quick way to earn money, just place your bet and wait for the outcome, at first they'll be able to expeirenced to win then that particular experienced will put them to a certain situation where they will keep on trying to win more, ending up with losing everything back and move them to desire more on that sequence possible addiction may takeover and dominate inside a student's mind.
That's the mindset of most people who gamble. Their mindset is flawed, and it also leads to flawed gambling. This mindset makes it difficult for them to stop, regardless of whether they win or lose. This mindset encourages them to continue gambling.
I've observed that in my community quite a number of high school students are already influenced by gambling. This may be due to their own gadgets which provide easier access to online gambling. But I know not all schoolchildren are like this.