The Pittsburgh Teachers Institute engaged Cornerstone Evaluation Associates LLC, a client-centered
research firm specializing in educational research and program evaluation, to
collaborate with all partners--PTI, PPS, Chatham and Carnegie Mellon--to undertake
evaluation activities deemed critical to understanding the Institute model and informing future
replication. The research and evaluation activities were designed to provide
information to serve three purposes--to inform the continuation and expansion of the Yale-New
Haven model, to provide information for improving the PTI program, and to offer evidence of
program effectiveness in support of fundraising efforts.