25 CFR § 39.710 - How does a school calculate annual bus transportation miles for day students?

---
identifier: "/us/cfr/t25/s39.710"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "25 CFR § 39.710 - How does a school calculate annual bus transportation miles for day students?"
title_number: 25
title_name: "Indians"
section_number: "39.710"
section_name: "How does a school calculate annual bus transportation miles for day students?"
chapter_name: "BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR"
subchapter_number: "E"
subchapter_name: "EDUCATION"
part_number: "39"
part_name: "THE INDIAN SCHOOL EQUALIZATION PROGRAM"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "25 U.S.C. 13, 2008; Public Law 107-110, 115 Stat. 1425."
regulatory_source: "44 FR 61864, Oct. 26, 1979, unless otherwise noted. Redesignated at 47 FR 13327, Mar. 30, 1982."
cfr_part: "39"
---


# 39.710 How does a school calculate annual bus transportation miles for day students?

To calculate the total annual bus transportation miles for day students, a school must use the appropriate formula from this section. In the formulas, Tu = Miles driven on Tuesday of the transportation mileage count week, W = Miles driven on Wednesday of the transportation mileage count week, and Th = Miles driven on Thursday of the transportation mileage count week.

(a) For ISEP-eligible day students whose route is entirely over improved roads, calculate miles using the following formula:

(b) For ISEP-eligible day students whose route is partly over unimproved roads, calculate miles using the following three steps.

(1) *Step 1.* Apply the following formula to miles driven over improved roads only:

(2) *Step 2.* Apply the following formula to miles driven over unimproved roads only:

(3) *Step 3.* Add together the sums from steps 1 and 2 to obtain the total annual transportation miles.