(1) The staff responsible for investigating the alleged violation shall commence investigation within ten days of receipt of the complaint by the superintendent of public instruction.

(2) Investigation by the superintendent of public instruction may include on-site investigations as appropriate.

(3) Upon completion of the investigation, investigating staff shall provide the superintendent of public instruction with a written report on the results of the investigation, no later than sixty calendar days after the receipt of such complaint. For complaints concerning violations of 20 U.S.C. Sec. 7881, Participation by private school children and teachers, investigating staff shall provide the written report to the superintendent no later than thirty-five calendar days after receipt of the complaint.

(4) The superintendent of public instruction shall respond in writing to the complainant as expeditiously as possible but in no event later than ten calendar days after the date of receipt of the written report described in subsection (3) of this section.

(5) The response shall clearly state either:

(a) That the complaint is without merit, the allegations are denied, and the basis for such denial; or

(b) The reasonable corrective measures deemed necessary to correct any violation: Provided, That any such corrective measures deemed necessary shall be instituted as expeditiously as possible but in no event later than thirty calendar days following the date of the response to the complainant.