You're asking, where do I put this money? Generally, you want to maximize tax laws to the greatest extent possible. To that end a Roth IRA might make a lot of sense for you because it lets you put money in to an account that lets you keep the earnings derived from that money without paying income tax on them.
Your option of a savings account is logical (though I think Bob Baerker's CD ladder suggestion is even better). You'll put this $6,000 in to a savings account, say earning 1.5%. At the end of the year you'll have made $90 in interest. You'll owe income taxes on that $90. But, thanks to the standard deduction, it's not likely you'll have income that would be subject to income taxes anyway. So, practically speaking, there's no difference between a regular taxable account or a Roth IRA (or other tax preferred vehicle).
Since this money is likely to be tapped while you're still in school, I'm not sure how much tax benefit you'll actually realize with a Roth IRA wrapper. However, your earnings will be locked in the Roth IRA until you attain retirement age. For simplicity, let's say you put $5,500 in to a Roth IRA. Over 5 years at 1.5% APR you'll earn roughly $425 in interest. After that 5 years you can take your $5,500 back free and clear BUT the $425 of interest would be subject to a penalty of $42.50 and income taxes up to the extent that you have a taxable income at all. The penalty can be avoided a couple of different ways like first time home purchase or if the account is less than 5 years old, qualified education expenses. If this was outside the Roth IRA wrapper there would be no such penalty and depending on what sort of income you'll be generating while you're in school there might not have even been a tax benefit to the Roth IRA wrapper anyway.
This answer got away from me, but you really just need to think about whether or not you'll be working while you're in school because tax preferred investment vehicles are only beneficial up to the extent that you're paying income taxes at all and generally put restrictions on the money which are subject to a penalty you otherwise wouldn't have exposure to.
It might make sense to broadly explain some relevant concepts that you may not have ever really encountered based on your age.
Income taxes: In a very basic sense you get something called a standard deduction (which for illustration purposes let's just call this $10,000 though the amount changes annually). Say you make $15,000 in 2018, you get to apply this standard deduction of -$10,000 to your income leaving you with $5,000 in taxable income.
Earnings: Generally, any money you earn in a year is taxable, including interest or dividends from investments. There's two ways to make money from an investment, interest/dividend payments or capital appreciation.
Interest/Dividends: If you have a savings account or own stock that pays a dividend, you'll receive a periodic payment, that payment is income.
Capital Appreciation: If you buy something for $100, and sell it for $120, you have a $20 capital gain. If you sell after you've owned the asset for a year, that's a long term capital gain, which receives favorable taxation; under 12 months is a short term capital gain which is considered income.
Capital Losses: If you buy something for $100 and sell it for $80, you have a capital loss of $20, which can be deducted against any gains you have.