TACSEI
Technical Assistance Center on Social Emotional Intervention for Young Children (TACSEI).
NHSA is one of seven primary national membership associations who collaborate with TACSEI to extend the impact of the Center's work on young children's social/emotional development and challenging behavior by promoting a "unified message" of the importance of evidence-based practices in the field and disseminating information about Center activities and materials. www.challengingbehavior.org.