At BELL, we take measurement very seriously. In fact, we consider this are to be one of our key market differentiators. Like the old adage goes, you can't improve what you can't measure. We rigorously evaluate program impact through a series of quantitative and qualitative measures, including computer adapative assessments administered on a pre- and post-program basis; parent, teacher, and scholar surveys; youth outcome assessments; and portfolio assessment. 

At the start of each BELL program, scholars complete a computer adaptive assessment built for Common Core State Standards to enable teachers to identify strengths and weaknesses and develop individualized learning plans. At the end of each BELL program, a second assessment or test quantify scholar learning gains, while a series of scholar, teacher, and parent surveys provide qualitative data about changes in scholars’ self-concept and social competency. 

BELL’s evaluation reports are prepared at the completion of each BELL Summer and BELL Afterschool program. Evaluation results are used to support scholar achievement, demonstrate program impact to parents, teachers, principals, donors, and other partners, and continuously strengthen program quality. BELL’s model of applying evaluation data for continuous program improvement has been nationally recognized by the Academy for Educational Development as a best practice in expanded learning programming.


BELL is a learning organization.  We aim to continuously improve our approach and make our expanded learning programs better and better every year. Our measurement activities are guided, advised, and endorsed by our Evaluation Advisory Board, an external, interdisciplinary group that oversee the application of principles and standards established in the evaluation and assessment fields.

Graciela Borsato
Senior Research Associate
The John W. Gardner Center

Duncan Chaplin
Senior Researcher
Mathematica Policy Research, Inc.

Christian Friend
CA Friend Consulting

Claudia Gentile
Associate Director of Survey Research
Mathematica Policy Research, Inc.

Leslie Goodyear
Principal Research Scientist
Education Development Corporation, Inc.

Priscilla Little (Chair)

Beth Miller
Director of Research and Evaluation
The Nellie Mae Education Foundation

Lauren Smith
Boston University School of Medicine