When may a school count a student for membership purposes?
Primary source
Verbatim text below is from the Electronic Code of Federal Regulations (eCFR), a public-domain U.S. government work. Always verify the current version with the eCFR before relying on it for any legal matter.
Full Text
If a student is enrolled, is in attendance during any of the first 10 days of school, and receives at least 5 days' instruction, the student is deemed to be enrolled all 10 days and shall be counted for ADM purposes. The first 10 days of school, for purposes of this section, are determined by the calendar that the school submits to OIEP.
(a) For ISEP purposes, a school can add a student to the membership when he or she has been enrolled and has received a full day of instruction from the school.
(b) Except as provided in § 39.210, to be counted for ADM, a student dropped under § 39.209 must:
(1) Be re-enrolled; and
(2) Receive a full day of instruction from the school.
This is legal information, not legal advice. Laws vary by jurisdiction and change frequently. Always verify current law with official sources and consult a licensed attorney in your jurisdiction for advice on your specific situation.