As part of an agreement between the NYC DoE and the UFT on the then new Teacher Data Initiative [TDI], a “Dear Colleague” letter was sent by Chancellor Klein to all New York City public school teachers in October 2008. According to the letter, the TDI was to be:
…a new tool to help teachers learn about their own strengths and opportunities for development …The teacher Data Reports are not to be used for evaluation purposes. That is, they won’t be used in tenure determinations or the annual rating process.