(3) A charter school shall obtain a written confirmation, signed by a parent or guardian of each student in that student's initial year of attendance at the charter school, that the student will remain in the charter school for at least 1 school year. That confirmation shall include a statement reading:
"I understand that my child is required to remain in this charter school, in the absence of any condition constituting good cause, for at least 1 school year"
and shall be kept on file at the school and made available for inspection to Department of Education officials or representatives from the public school district in which the student resides. After a student's initial year of enrollment, it shall be presumed for school district planning purposes only that the student will continue to attend the charter school until completion of the school's highest grade level and no further written confirmation need be obtained by the charter school.