dont invest in the market, annuities, CDs etc just yet. The money you have coming in now you are going to want accessable at any given time for school shit, transportation etc.....i dont know your family financial backround but i know you are probably going to a 4 year school when you get out of HS....put what you can into a savings account and be very cheap with your spending. Once you graduate college and get a career, start the investment process than.
i just wouldnt lock up funds in investments that have penalties etc for withdrawing early.
your case is more complicated than lets say a 28 year old....there are so many what ifs with someone you age.....better to keep the money handy.
what I do hope is that your mom (single parent household if im not mistaken) has life insurance on her with you as the beneficiary (if you are only child, i cannot remember) so in case something were to happen to your mom you wont be setback, or there is some sort of trust account for you....something again that wont set you back from an education etc.
1st investment you can make in small doses maybe in the 3rd year of college is an IRA.