; (B) source lower cost options, including presenting lower cost alternatives to faculty for faculty to consider, when practicable; and (C) maximize the availability of format options for students. (2) Due dates In carrying out paragraph (1), an institution of higher education may establish due dates for faculty or departments to notify the campus bookstore of required and recommended course materials. ; (5) in subsection (f)— (A) by redesignating paragraphs (3) and (4) as paragraphs (4) and (5); and (B) by inserting after paragraph (2) the following: (3) available open educational resources; ; and (6) by striking subsection (g) and redesignating subsections (h) and (i) as subsections (g) and (h), respectively. 5. Sense of congress It is the sense of Congress that institutions of higher education should encourage the consideration of open textbooks by faculty within the generally accepted principles of academic freedom that establishes the right and responsibility of faculty members, individually and collectively, to select course materials that are pedagogically most appropriate for their classes. 6. GAO report Not later than 3 years after the date of enactment of this Act, the Comptroller General of the United States shall prepare and submit a report to the Committee on Health, Education, Labor, and Pensions of the Senate and the Committee on Education and Labor of the House of Representatives on the cost of textbooks to students at institutions of higher education. The report shall particularly examine— (1) the implementation of section 133 of the Higher Education Act of 1965 ( 20 U.S.C. 1015b ), as amended by section 4, including— (A) the availability of college textbook and open educational resource information on course schedules; (B) the compliance of publishers with applicable requirements under such section; and (C) the costs and benefits to institutions of higher education and to students; (2) the change in the cost of textbooks