As in autosomal recessive inheritance, two copies of a disease allele on the X chromosome are required for an individual with two X chromosomes (a female) to be affected with an X-linked recessive disease.
The form 1098-T is used by the student or whoever pays the qualified tuition or educational expenses to claim a credit to taxes filed on IRS Form 1040 or 1040-A. The form will show the student's name, address, social security number and other identifying information.
The reason I say that is that the forms for requesting transcript or copy of returns are the same for both individual and corporate entities. The written form for mail-in request of a return is Form 4506, linked here: http://www.irs.gov/pub/irs-pdf/f4506.pdf.