Q. Why am I being taxed on the 50,000?
A. You, most likely, entered something wrong.*
Scholarships that pay for qualified educational expenses (QEE - tuition, fees, books and other course materials) is tax free. Scholarship amounts that exceed QEE is taxable income, on the student’s tax return. Room & board are not QEE.
If box 5 of the 1098-T exceeds box 1, TurboTax (TT) will treat the difference as taxable income, unless you enter additional QEE at books and other expenses.
*One possibility is mismatched years. A common problem is when the school posts a full years' scholarship in box 5 of the 1098-T but only the fall semester tuition in box 1. You have to make an adjustment when you enter the 1098-T.