This document describes the breadth of the research that the ETS (Educational Testing Service) Research & Development division is conducting in 2010. This portfolio will be updated in early 2011 to reflect changes to existing projects and new projects that were added after this document was completed. The research described in this portfolio falls into three large categories: (1) Research supported by the ETS Strategic Research Investment; (2) Research funded by testing programs at ETS; and (3) Research funded by external governmental and private agencies. Within each category, this portfolio provides information about active research projects, the focus and purpose of the research, and the R&D staff members responsible for it. There is also discussion of why the research is important--how it is aligned with ETS's mission and how it builds organizational knowledge and capability. (Contains 1 footnote.)