Your parents were correct in claiming you as a dependent. Because you are under age 24, you parent do NOT have to pay more than 50% of your expenses. The support rule for full time students,under 24, is only that they didn't provide more than half their own support. Scholarships, even those that exceed tuition, fees & books, is not your money for the support test. You cannot say you paid for 80-90% yourself, if you are counting scholarships.
The less than $4000 in gross income test does not apply to child dependents who are full time students. The support test is separate from the income test.
There is a $6200 ($6300 for 2015) rule, but it, too, is separate from the support test. There is a rule that says IF somebody else CAN claim YOU as a dependent, You are not allowed to claim your own exemption. If you have sufficient income (usually more than $6300), you can & should still file taxes, you just don’t get your own $4000 exemption (deduction). In TurboTax, you indicate that somebody else can claim you as a dependent.
One more thing; there's a new urban myth among college students that says they can get a $1000 from the government just for filing a tax form. For most of them, they simply aren't eligible. A student, under age 24, is only eligible for the refundable portion of the American Opportunity Credit if he supports himself by working. You cannot be supporting yourself on parental support, 529 plans or student loans & grants. You must have actually paid tuition, not had it paid by scholarships & grants. It is usually best if the parent claims that credit.
