Amends GS 115C-218.45(f) concerning permissible charter school enrollment priority. Authorizes enrollment priority for siblings who apply to the charter school for admission beginning in the same school year. Modifies the existing provision allowing enrollment priority of children of the schools's full-time employees and children of the school's board of directors to include children of the school's full-time contracted employees. Maintains the 15% cap for enrollment priority of children of full-time employees (including contractors) and boards of directors, which the State Board of education can waive. Applies beginning with the 2019-20 school year.