for the most recent fiscal year for which data are available of greater than 70 percent. (4) Beginning of Period of Enrollment For purposes of this subsection, a period of enrollment begins on the first day that classes begin for the applicable period of enrollment. (b) Amount of loan (1) In general The determination of the amount of a loan disbursed by an eligible institution under this section shall be the lesser of— (A) an amount that is equal to the estimated loan amount, as determined by the institution by calculating— (i) the estimated cost of attendance at the institution, minus (ii) (I) any estimated financial assistance reasonably available to such student, including assistance that the student will receive from a Federal grant, including a Federal Pell Grant, a State grant, an institutional grant, or a scholarship or grant from another source, that is known to the institution at the time the student’s determination of need is made