As used in this subpart:

1. (1) “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 34 C.F.R. § 300.148(d)(1)(ii);
2. (2) “Day” means a calendar day unless otherwise indicated as business day or school day;
3. (3) “Department” means the Department of Education;
4. (4) “He” or “his” means both the male and female gender;
5. (5) “Joint exhibit” means an exhibit that the parties agree should be admitted into evidence;
6. (6) “Party” means a parent or a public agency responsible for the provision of a free appropriate public education to children with disabilities; and

7. (7)

   1. (A) “School day” means any day, including a partial day, that children are in attendance at school for instructional purposes.
   2. (B) School day has the same meaning for all children in school, including children with and without disabilities.