; (2) the adoption of such open textbooks, including outside of the eligible entity; (3) the savings generated for students, States, and the Federal Government through projects supported under this section; and (4) the impact of projects supported under this section on instruction and student learning outcomes. (k) Authorization of appropriations There are authorized to be appropriated to carry out this section such sums as are necessary. 4. Textbook price information Section 133 of the Higher Education Act of 1965 ( 20 U.S.C. 1015b ) is amended— (1) in subsection (b)— (A) by striking paragraph (6) and inserting the following: (6) Open educational resource The term open educational resource means a teaching, learning, or research resource that is offered freely to users in at least one form and that resides in the public domain or has been released under an open copyright license that allows for its free use, reuse, modification, and sharing with attribution. ; and (B) in paragraph (9), by striking textbook that and all that follows through the period at the end and inserting textbook that may include printed materials, website access, and electronically distributed materials. ; (2) in subsection (c)(1)— (A) in the matter preceding subparagraph (A), by striking or other person or adopting entity in charge of selecting course materials and inserting or other person or entity in charge of selecting or aiding in the discovery and procurement of course materials ; (B) in subparagraph (A), by inserting such institution of higher education or to after would make the college textbook or supplemental material available to