The purpose of this document is to identify the features of four successful collaborative partnerships between state education agencies (SEAs) and parent training and information centers (PTIs) and describe how these collaborative partnerships are improving SEA outcomes on Indicator B8 of the state performance plans (SPPs)--i.e., "Percent of parents with a child receiving special education services who report that schools facilitated parent involvement as a means of improving services and results for children with disabilities" [20 U.S.C. Section 1416(a)(3)(A)]. Although a similar Part C indicator exists, this study focuses on the Part B indicator since most Part C programs exist outside the SEA. This document elaborates on an earlier document published by Project Forum and the Technical Assistance Alliance for Parent Centers (ALLIANCE) (Brick & Markowitz, 2004). Project Forum completed this document as part of its cooperative agreement with the U.S. Department of Education's Office of Special Education Programs (OSEP). (Contains 4 footnotes.)