(a) For the school year commencing July 1, 2015, and each school year thereafter, the Department of Education shall calculate the accountability index, as defined in section 10-223e , for an alliance district, as defined in section 10-262u , with data from each school under the jurisdiction of the board of education for such alliance district and data from any state or local charter school, as defined in section 10-66aa , located in such alliance district, provided the local board of education for such alliance district and the state or local charter school reach mutual agreement for the inclusion of the data from the state or local charter schools and the terms of such agreement are approved by the State Board of Education.
(b) Not later than October 1, 2014, the Department of Education shall report, in accordance with the provisions of section 11-4a , the district performance indices results, calculated in accordance with the provisions of subsection (a) of this section, to the joint standing committee of the General Assembly having cognizance of matters relating to education.