Welcome to the


Cross-Age Learning International Network (CALIN)

A uniquely easy and effective way to help both teachers and students to have more enjoyable and productive schools!

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Free cross-age learning (peer tutoring) lesson plan exchange.

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Please take a minute or two to click on Please Share! and contribute a brief, favorite lesson. This site only works when teachers and student teachers contribute!

Teacher-to-Teacher CALIN Web Site Hosts

Colleen Beery and Kim O’Brien are both elementary school teachers and long-time friends. Between them, they have over 25 years of continuing teaching experience with school-wide cross-age learning in ethnically and otherwise diverse schools. Keith Beery is a clinical faculty member in the Department of Pediatrics, University of California, San Francisco, who strongly supports Colleen’s, Kim’s, and other teachers’ fine  efforts.

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