This is quite risky bro. You decided not to pay for school fees to invest on something you are not a hundred percent sure. Yes, investing is not so bad only if you have an allocated money for it. But risking an amount that is supposed to be spent on a need or something more important is not a thing I would do. Spend your extra money only. You already said it, you are still a student. Your future depends on your decisions. Not all investment decisions are okay, especially if you risked something that should be your primary priority.
I agree with you sir. That is a good advice because education is the most important to everyone. It is better to be well educated because it serve to us as our treasure. And this is the first step for us to have a good job in the future.
While investing is good but in this case this is try and error. Like others said, this is risk we're not sure about this. After we graduated, that is the time that we can find job for us to earn profit and I think that's the right time to invest.