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Horizon Science Academy Denison Middle School is a non-selective and tuition-free public charter school located in Cleveland. HSA Denison Middle serves grades K-8. Our STEM-focused and college-preparatory curriculum is designed to change the trajectory of students’ lives.

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Recent News
Professional Development Day at CMSA
Earlier this fall, Director of English Education, Andy Flaherty, visits our public charter schools for Professional Development days.

Charter Public Schools and the Chipotlification of American Education
Mixing and matching school options is appealing for parents, but it can be overwhelming. Charters can be the 'bowl' that holds it all together.

Six Concept Schools Recognized as Among the Best Charter High Schools in the Nation by US News & World Report
With CMSA leading the way at #1 in Illinois, Concept High Schools are the best in the nation

Stanford University: Concept Schools is a Gap-Busting CMO
CREDO Study: Charter public school students outperform their traditional public school peers.

Why Pronouncing Student Names Correctly Matters, and How to Get Them Right
Constant mispronunciation not only makes school more stressful, it can send a message that teachers aren’t making the effort to respect students' identity, culture, and heritage.
At A Glance
- 2008 Founded
- K-8 Grades Served
- 300 Target Enrollment
- 1:1 Technology