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34 C.F.R. § 300.9 Day; business day; school day.
Title 34 - Education
As used in this part, the term— (a) Day means calendar day unless otherwise indicated as business day or school day; (b) Business day means Monday through Friday, except for Federal and State holidays (unless holidays are specifically included in the designation of business day, as in §300.403(d)(1)(ii)); and (c)(1) School day means any day, including a partial day, that children are in attendance at school for instructional purposes. (2) The term school day has the same meaning for all children in school, including children with and without disabilities. (Authority: 20 U.S.C. 1221e–3)
Title 34: Education
PART 300—ASSISTANCE TO STATES FOR THE EDUCATION OF CHILDREN WITH DISABILITIES
Subpart A—General
Definitions Used in This Part
§ 300.9 Day; business day; school day.