The National Science Foundation contracted with Abt Associates to conduct an evaluation of its Partnerships for International Research and Education (PIRE) program, which supports intellectually substantive collaborations between U.S. and foreign researchers in which the international partnership is essential to the research effort. The evaluation compared the research outcomes of PIRE and comparison group awards (i.e., projects) and personnel (Principal Investigators, postdoctoral and graduate student participants); compared participant experiences, especially collaborations with foreign investigators during and subsequent to the award period; examined the role of U.S. institutional policies and practices in the implementation of PIRE awards; and explored potential contributions to global societal challenges. Findings suggest that the PIRE program is fostering the global engagement of U.S. scientists and engineers with no loss of research productivity or quality relative to the comparison group. A quasi-experimental comparative interrupted time series analysis showed that PIRE increases postdoctoral researchers' and graduate students' research productivity and the citation impact of postdocs' publications. This report contains supplementary materials to the final report. This is the second of three volumes of the final report for the Evaluation of NSF's Partnerships for International Research and Education (PIRE) program. Volume 2 includes additional material: technical details on the study methods and survey response rates, supplementary information about the research outcomes of the PIRE program, and a comparison of PIRE participants' employment outcomes to national trends for science and engineering (S&E) degree recipients. [For volume 1 "Evaluation of the National Science Foundation's Partnerships for International Research and Education (PIRE) Program, Volume 1: Final Report," see ED563795. For volume 3, which contains separate reports of each survey, visit: http://abtassociates.com/Reports/2015/Evaluation-of-the-National-Science-Foundation%E2%80%99-(8).aspx.]