; and (3) the results of the evaluation under subsection (b). (b) National evaluation Not later than 6 months after the date of the enactment of the Aim Higher Act, the Secretary shall seek to enter into a contract with an independent entity to perform an evaluation of the grants awarded under this subtitle. Such evaluation shall apply rigorous procedures to obtain valid and reliable data concerning student outcomes by social and academic characteristics and monitor the progress of students from secondary school to and through postsecondary education. (c) Technical assistance The Secretary shall provide technical assistance to States and eligible entities concerning best practices and quality improvement programs in early college high schools and dual or concurrent enrollment programs and shall disseminate such best practices among eligible entities, States, and local educational agencies. (d) Administrative costs From amounts reserved to carry out this section under section 419P(b)(3), the Secretary may reserve such sums as may be necessary for the direct administrative costs of carrying out the Secretary’s responsibilities under this subtitle. 419U. Rules of construction (a) Employees Nothing in this subpart shall be construed to alter or otherwise affect the rights, remedies, and procedures afforded to the employees of local educational agencies (including schools) or institutions of higher education under Federal, State, or local laws (including applicable regulations or court orders) or under the terms of collective bargaining agreements, memoranda of understanding, or other agreements between such employees and their employers. (b) Graduation rate A student who graduates from an early college high school supported by a grant under section 419Q within 100 percent of the normal time for completion described in the eligible entity’s application under such section shall be counted in the four-year adjusted cohort graduation rate for such high school. . 4033. Revised definitions of TEACH grants Section 420L of