
Our research
¿ì²¥³ÉÈË CKLA & ¿ì²¥³ÉÈË Caminos
Using a fundamentally different approach to language arts, ¿ì²¥³ÉÈË Core Knowledge Language Arts® (CKLA) is built on decades of early literacy research that demonstrates the importance of wide-ranging background knowledge and explicit and systematic instruction in foundational skills. Increasingly more districts are choosing ¿ì²¥³ÉÈË CKLA because they know they’ll see results.
¿ì²¥³ÉÈË CKLA meets the criteria for Tier I-Strong Evidence as an education intervention under ESSA.
Impact overview >
Efficacy
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[TIER I ESSA EVIDENCE] Building knowledge boosts comprehension: ¿ì²¥³ÉÈË CKLA outperformed a control group on proximal and standardized tests. |
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An evaluation of Core Knowledge curriculum in charter schools: Reading scores significantly improved and income-based gaps were eliminated. |
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NYC CKLA early literacy pilot: CKLA students’ literacy gains more than doubled those of students at demographically similar schools. |
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AZ CKLA efficacy research report: CKLA significantly improved outcomes for students overall, as well as economically disadvantaged and Latino students. |
Case studies
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Aldine Independent School District, Texas: ¿ì²¥³ÉÈË’s early literacy suite boosts reading proficiency ¿ì²¥³ÉÈË 30% to 50%. |
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Allen Parish Public Schools, Louisiana: Louisiana’s Allen Parish School District surpasses state averages with ¿ì²¥³ÉÈË CKLA and mCLASS. |
Oak Harbor School District, Washington: Kindergarten reading proficiency improved by 19% and Grade 1 by 31% in 3 years. |
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West Jefferson Hills School District, Pennsylvania: Students reach the 98th percentile among their peers nationwide after implementing ¿ì²¥³ÉÈË. |
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Salemberg Elementary School, North Carolina: Students made 80–100 composite points of growth in one semester. |
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Euclid City School District, Ohio: ¿ì²¥³ÉÈË CKLA, Boost Reading, and mCLASS boosted Euclid Kindergarten reading proficiency ¿ì²¥³ÉÈË 10% to 57% and Grade 1 ¿ì²¥³ÉÈË 20% to 37% in one school year. |
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Gallia County Local School District, Ohio: With ¿ì²¥³ÉÈË CKLA, the number of Gallia County students needing a Reading Improvement Plan dropped ¿ì²¥³ÉÈË 46% to 27% in one year. |
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Windber Area Elementary School, Pennsylvania: Windber raises reading proficiency ¿ì²¥³ÉÈË 53% to 63% in one year using CKLA, mCLASS and Boost Reading. |
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Lafourche Parish Public School District, Louisiana: Louisiana’s Lafourche Parish School District improves third-grade LEAP scores to 73% basic or better, surpassing the state average, with ¿ì²¥³ÉÈË CKLA. |
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Pleasanton Independent School District, Texas: Kindergarten scores rise ¿ì²¥³ÉÈË 44% to 60% with ¿ì²¥³ÉÈË. |
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Robstown Independent School District, Texas: Texas’s Robstown ISD doubles first-grade benchmark scores—¿ì²¥³ÉÈË 22% to 44% in one year—using ¿ì²¥³ÉÈË’s early literacy suite. |
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Buckeye Valley Local School District, Ohio: Ohio’s Buckeye Valley LSD increases second-grade benchmark scores by 23% ¿ì²¥³ÉÈË midyear to end of year using ¿ì²¥³ÉÈË’s literacy suite. |
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Lakewood Local School District, Ohio: Ohio’s Lakewood Local School District increases kindergarten reading proficiency by 57% in just one year with ¿ì²¥³ÉÈË’s comprehensive literacy suite. |
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Lower Yukon School District, Alaska: Alaska’s Lower Yukon School District achieves 12–18% reading growth in K–2 with ¿ì²¥³ÉÈË’s early literacy suite. |
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Woodbury City Public Schools, New Jersey: New Jersey’s Woodbury City Public Schools increases first grade reading proficiency by 27% after piloting ¿ì²¥³ÉÈË CKLA and Boost Reading. |
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Petersburg School District, Alaska: Alaska’s Petersburg School District raises kindergarten reading proficiency ¿ì²¥³ÉÈË 10% to 89% in one year with ¿ì²¥³ÉÈË CKLA and mCLASS, surpassing state and national averages. |
State success
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Louisiana’s Reading Renaissance: Implementing CKLA drives 3rd grade LEAP scores across Louisiana. |

Explore more of our research.
Learn more about the research behind our programs.
Core curriculum
¿ì²¥³ÉÈË ELA
¿ì²¥³ÉÈË ELA is designed specifically for middle school, based on extensive resea...
Supplemental
Boost Reading
Leveraging compelling storytelling and the latest research, Boost Reading (forme...
Assessment
mCLASS®
Based on over 30 years of research, mCLASS® is the gold-standard assessment and...