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Welcome! There is a lot to learn about the Comprehensive Assessment of Leadership for Learning (CALL) from the research roots to the unique platform and feedback system to the CALL Team's customized services. The features of the CALL System and theory behind this work are consistent across all versions of CALL: CALL Primary, Four Domains CALL, and WIDA SIS. Please contact us with any questions. And, feel free to download this one-page CALL document to share with your colleagues.