; (B) degree attainment; (C) program completion; (D) successful entry into student loan repayment; (E) cumulative borrowing levels; and (F) such other factors as the Secretary of Education may determine. (2) Exception The disaggregation under paragraph (1) shall not be required in a case in which the number of borrowers in a category is insufficient to yield statistically reliable information or the results would reveal personally identifiable information about an individual borrower. (c) Interim reports Not later than 18 months after the commencement of the study under subsection (a), and annually thereafter, the Secretary of Education shall evaluate the progress of the study and report any short-term findings to the appropriate committees of Congress. 4114. Study and procedures on determining family size (a) In general Not later than 1 year after the date of enactment of this Act, the Secretary of Education shall— (1) conduct, in consultation with the Secretary of the Treasury, a study which meets the specifications described in subsection (b), on the effect of using data from the Internal Revenue Service on the deduction for personal exemptions provided by section 151 of the Internal Revenue Code of 1986 for a proxy for family size in an income-driven repayment plan, and publish such study in the Federal Register; (2) use the results of the study conducted under paragraph (1) to develop procedures for determining family size for the automatic recertification of income for an income-driven repayment plan in a manner that minimizes burdens and unintended harm to borrowers; (3) publish the procedures developed under paragraph (2) in the Federal Register; and (4) after a notice and comment period on such procedures, use such comments to finalize the procedures. (b) Specifications The study conducted under subsection (a)(1) shall— (1) determine how closely such personal exemptions match the family size that borrowers report on their income-driven repayment plan request form