The student interest deduction is not an itemized deduction. Technically, it is an "adjustment to income"; also called an "above the line" deduction.
That is, you may deduct student loan interest and still use the standard deduction. You do not have to itemize deductions to get the student loan interest deduction.
The student loan interest deduction is limited to $2500 maximum. You may not claim the student loan interest adjustment (deduction) if you are claimed as a dependent by someone else.
