• Helping teachers implement proven instructional practices for improving student learning while building a school culture to sustain and spread those practices.


    Students in CLI classrooms earned higher test scores on standardized reading tests, were more likely to meet state standards, and achieved gains on tests of reading proficiency that exceeded those of students in non-CLI classrooms.

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    HELlOS (Highly Effective Literacy Instruction Operating System) organizes and guides the critical and interrelated work of improving instructional practices, supporting adult professional learning, and creating conditions in classrooms and schools that are responsive to the needs of students.

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    The Massachusetts Department of Elementary & Secondary Education has selected Cornerstone Literacy to be a provider for its 2014 Summer Professional Development Institutes.

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