34 C.F.R. § 686.22
(a) Eligibility for payment formula—(1) Programs using standard terms with at least 30 weeks of instructional time. A student's grant for a payment period is calculated under paragraph (b) or (d) of this section if—
(i) The student is enrolled in an eligible program that—
(C) (1) For an undergraduate student, requires the student to enroll for at least 12 credit hours in each term in the award year to qualify as a full-time student; or
(2) For a graduate student, each term in the award year meets the minimum full-time enrollment status established by the institution for a semester, trimester, or quarter; and
(ii) The program uses an academic calendar that provides at least 30 weeks of instructional time in—
(B) Any two semesters or trimesters, or any three quarters where—
(1) The institution starts its terms for different cohorts of students on a periodic basis (e.g., monthly);
(2) The program is offered exclusively in semesters, trimesters, or quarters; and
(3) Students are not allowed to be enrolled simultaneously in overlapping terms and must stay with the cohort in which they start unless they withdraw from a term (or skip a term) and reenroll in a subsequent term.
(2) Programs using standard terms with less than 30 weeks of instructional time. A student's payment for a payment period is calculated under paragraph (c) or (d) of this section if—
(i) The student is enrolled in an eligible program that—
(C) (1) For an undergraduate student, requires the student to enroll in at least 12 credit hours in each term in the award year to qualify as a full-time student; or
(2) For a graduate student, each term in the award year meets the minimum full-time enrollment status established by the institution for a semester, trimester, or quarter; and
(ii) The institution offering the program—
(3) Other programs using terms and credit hours. A student's payment for a payment period is calculated under paragraph (d) of this section if the student is enrolled in an eligible program that—
(4) Programs not using terms or using clock hours. A student's payment for any payment period is calculated under paragraph (e) of this section if the student is enrolled in an eligible program that—
(5) Programs for which an exception to the academic year definition has been granted under 34 CFR 668.3. If an institution receives a waiver from the Secretary of the 30 weeks of instructional time requirement under 34 CFR 668.3, an institution may calculate a student's payment for a payment period using the following methodologies:
(i) If the program is offered in terms and credit hours, the institution uses the methodology in—
(b) Programs using standard terms with at least 30 weeks of instructional time. The payment for a payment period, i.e., an academic term, for a student in a program using standard terms with at least 30 weeks of instructional time in two semesters or trimesters or in three quarters as described in paragraph (a)(1)(ii) of this section, is calculated by—
(3) Dividing the amount described in paragraph (b)(2) of this section by—
(ii) The number of terms over which the institution chooses to distribute the student's annual award if—
(c) Programs using standard terms with less than 30 weeks of instructional time. The payment for a payment period, i.e., an academic term, for a student in a program using standard terms with less than 30 weeks of instructional time in two semesters or trimesters or in three quarters as described in paragraph (a)(2)(ii)(A) of this section, is calculated by—
(3) Multiplying his or her annual award determined under paragraph (c)(2) of this section by the following fraction as applicable:
(i) In a program using semesters or trimesters—
The number of weeks of instructional time offered in the program in the fall and spring semesters or trimesters
The number of weeks in the program's academic year
(ii) In a program using quarters—

; and
(4)
(ii) Dividing the student's annual award determined under paragraph (c)(2) of this section by the number of terms over which the institution chooses to distribute the student's annual award if—
(d) Other programs using terms and credit hours. The payment for a payment period, i.e., an academic term, for a student in a program using terms and credit hours, other than those described in paragraph (a)(1) or (2) of this section, is calculated by—
(3) Multiplying his or her annual award determined under paragraph (d)(2) of this section by the following fraction:

(e) Programs using credit hours without terms or clock hours. The payment for a payment period for a student in a program using credit hours without terms or using clock hours is calculated by multiplying the Scheduled Award by the lesser of—
(1)

; or
(2)

(h) Definition of academic year. For purposes of this section and § 686.25, an institution must define an academic year—
(i) Payment period completing a Scheduled Award. In a payment period, if a student is completing a Scheduled Award, the student's payment for the payment period—
(2) Is the remaining amount of the Scheduled Award being completed plus an amount from the next Scheduled Award, if available, up to the payment for the payment period.
(Authority: 20 U.S.C. 1070g, et seq.)
[73 35495, June 23, 2008, as amended at 74 FR 20221, May 1, 2009]