(2) If the superintendent or administrative principal of a school district finds that the parent or guardian of a child who is attending the schools of the district is not domiciled within the district and the child is not kept in the home of another person domiciled within the school district and supported by him gratis as if the child was the person's own child as provided for in paragraph (1) of this subsection, the superintendent or administrative principal may apply to the board of education for the removal of the child. The parent or guardian shall be entitled to a hearing before the board and if in the judgment of the board the parent or guardian is not domiciled within the district or the child is not kept in the home of another person domiciled within the school district and supported by him gratis as if the child was the person's own child as provided for in paragraph (1) of this subsection, the board may order the transfer or removal of the child from school. The parent or guardian may contest the board's decision before the commissioner within 21 days of the date of the decision and shall be entitled to an expedited hearing before the commissioner and shall have the burden of proof by a preponderance of the evidence that the child is eligible for a free education under the criteria listed in this subsection. The board of education shall, at the time of its decision, notify the parent or guardian in writing of his right to contest the decision within 21 days. No child shall be removed from school during the 21-day period in which the parent may contest the board's decision or during the pendency of the proceedings before the commissioner. If in the judgment of the commissioner the evidence does not support the claim of the parent or guardian, the commissioner shall assess the parent or guardian tuition for the student prorated to the time of the student's ineligible attendance in the schools of the district. Tuition shall be computed on the basis of 1/180 of the total annual per pupil cost to the local district multiplied by the number of days of ineligible attendance and shall be collected in the manner in which orders of the commissioner are enforced. Nothing shall preclude a board from collecting tuition from the parent or guardian for a student's period of ineligible attendance in the schools of the district where the issue is not appealed to the commissioner; The provisions of this section requiring proof of support, custody or tenancy shall not apply to a person keeping a child in his home whose parent or guardian is a member of the New Jersey National Guard or a member of the reserve component of the armed forces of the United States and who has been ordered into active military service in any of the armed forces of the United States in time of war or national emergency. In such a situation, the child shall be eligible to enroll in the district in which he is being kept, and no tuition shall be charged by the district. Following the return of the child's parent or guardian from active military service, the child's eligibility for enrollment without tuition in the district in which he or she is being kept shall cease at the end of the current school year;