For the purpose of this subchapter and part C of subchapter I of chapter 34 of title 42, except subpart 2 of part A of this subchapter, the term “family contribution” with respect to any student means the amount which the student and the student’s family may be reasonably expected to contribute toward the student’s postsecondary education for the academic year for which the determination is made, as determined in accordance with this part.