Our Team

Together, WestEd and CRESST have nearly 100 years of expertise in conducting large-scale research, developing educational resources, and providing technical assistance to states. We continue our partnership from the Assessment and Accountability Comprehensive Center (2005–2012) to our current collaboration as the Center on Standards and Assessment Implementation (CSAI).


For nearly 50 years, WestEd has worked with states, districts, and schools to develop capacity to increase academic achievement for all students through instructional practice, assessment, and use of accountability data at various levels.

Currently, WestEd works with instructional and leadership teams across the nation to help them develop, implement, and evaluate standards, assessments, and classroom resources aimed at improving instructional practice and student outcomes.

The Center for Research on Evaluation, Standards, and Student Testing (CRESST) is a nationally renowned research center at the University of California, Los Angeles.

CRESST has almost five decades of unsurpassed experience in helping states, school districts, and schools develop and align their assessment to measure increasingly rigorous standards.


CSAI Directors

Deborah Sigman


Deborah Sigman is the Director of CSAI and the Deputy Director of the SAAS program at WestEd. She leads the Assessment and Accountability content strands for CSAI.

CSAI Staff: Joan Herman

Joan Herman

Associate Director

Joan Herman is a Senior Research Scientist at CRESST and the Associate Director of CSAI. She also leads the CRESST/CSAI team and heads CSAI's Standards and Curriculum and Instruction content strands.

CSAI Management Team

Bryan Hemberg

Program Manager

Bryan Hemberg is a Senior Assessment Manager in the SAAS program at WestEd and the Program Manager for CSAI.

Carole Gallagher

Content Director, Accountability

Carole Gallagher is the Director of Research in the SAAS program at WestEd and Co-Leader of the Accountability content strand for CSAI.

CSAI Staff: Sandy Chang

Sandy Chang

Director, Communications and Dissemination

Sandy Chang is a Research Associate at CRESST and leads Communications and Dissemination for CSAI. She is Co-Leader of the Standards content strand for CSAI.

CSAI Staff: Barbara Jones

Barbara Jones

Content Director, Curriculum and Instruction

Barbara Jones is a Research Associate at CRESST and Co-Leader of the Curriculum and Instruction content strand for CSAI.

CSAI Research and Technical Assistance Support Team

CSAI Staff: Stephen Hamilton

Stephen Hamilton

Content Advisor, District Implementation Services

Steve Hamilton is a Director of District and School Services in the Learning Innovations program at WestEd and Content Advisor of District Implementation Services at CSAI.

CSAI Staff: Margaret Heritage

Margaret Heritage

Content Advisor, Curriculum and Instruction

Margaret Heritage is a Senior Scientist in the Program Services department at WestEd and Content Advisor for the Curriculum and Instruction strand at CSAI.

Tiffany Katanyoutanant

Researcher, Assessment and Accountability

Tiffany Katanyoutanant is a Researcher in the SAAS program at WestEd and of Assessment and Accountability for CSAI.

CSAI Staff: Sharon Nelson Barber

Sharon Nelson-Barber

Content Advisor, Diverse Learners

Sharon Nelson-Barber is the Director of the Center for the Study of Culture and Language in Education (CLE) at WestEd and Content Advisor of Diverse Learners and American Indian and Alaska Native students for CSAI.

Julie Park Haubner

Content Specialist, Standards and Curriculum and Instruction

Julie Park Haubner is a Senior Researcher at CRESST and Content Specialist of Standards and Curriculum and Instruction for CSAI.

Mai Chou Vang

Researcher, Accountability and Policy

Mai Chou Vang is a Researcher in the SAAS program at WestEd and of Accountability and Policy for CSAI.