Nonexperimental methods, such as regression modeling or statistical matching, produce unbiased estimates if the underlying assumptions hold, but these assumptions are usually not testable. Most studies testing nonexperimental designs find that they fail to produce unbiased estimates, but these...

This is the first of four planned reports from a multiyear study focusing on the TIF grants awarded in 2010. It examines grantees’ implementation experiences and intermediate educator outcomes near the end of the first year of program implementation, before the first pay-for-performance...

Mathematica provided technical assistance in developing and estimating VAMs for use in Phase 1 of the pilot.

This paper explores how the design features of curriculum materials might influence potential opportunities to learn and student outcomes through a comparative, documentary analysis of four mathematics curricula commonly used in the United States.

Read the final report from a large-scale, rigorous study examining how four math curricula affect achievement across two years—from first through second grades. The curricula were (1) Investigations in Number, Data, and Space; (2) Math Expressions; (3) Saxon Math; and (4) Scott...

This brief examines the extent to which states that received RTT grants (RTT states) and states that did not (non-RTT states) reported requiring teacher evaluation policies aligned with RTT priorities as of spring 2012.

This appendix provides the details that underlie the analyses reported in the evaluation brief, “After Two Years, Three Elementary Math Curricula Outperform a Fourth.†The details are organized in six sections: Study Curricula and Design (Section A), Data Collection (Section B),...