Rappaport has worked as a qualitative researcher on a variety of projects since joining MDRC. She is currently working on two Investing in Innovation (i3) expansion studies including Success for All: An Evaluation of the Investing in Innovation Scale-Up and Scaling Up the Success for All Middle School Math Program, which she manages. Her prior work included three studies of the Academy high school model: the Ninth Grade Academy study, the Career Academies project, and the Academy of Engineering formative evaluation. Rappaport has also been on the operations side of programs, including recruitment and site development for three random assignment evaluations: the Academy high school model (including the Ninth Grade Academy study, the Career Academies project, and the Academy of Engineering formative evaluation), the Reading Professional Development Impact Study, and the Math Professional Development Impact Study. Before joining MDRC, Rappaport worked for the New York State Education Department Bilingual Office and at the Puerto Rican Legal Defense and Education Fund, where she researched how bilingual education was being implemented in New York City. For 11 years prior to that, she was a National Board Certified elementary school teacher. Rappaport received an MPA from New York University, where she currently teaches a class.