Valid and Reliable Assessment for All Children
The COR Advantage assessment is a whole-child assessment built on 36 items, proven by over 50 years of research to best prepare children for school success. With the fewest items of any early childhood assessment and powered by Kaymbu's user-friendly technology, COR Advantage saves educators time, allowing them to focus on what matters most.
Assess the Whole Child
The COR Advantage assessment provides a complete picture of child development.
Compatible with any developmentally-appropriate curriculum, COR Advantage allows teachers to view children's development through play and naturally occurring activities. COR Advantage is aligned with state standards in every state, as well as the HeadStart Early Learning Outcomes Framework, Common Core Standards for Kindergarten, and more.
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Social & Emotional Development
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Language, Literacy & Communication
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Mathematics
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Science & Technology
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Creative Arts
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English Language Learning
Real Time Dashboards
All stakeholders can easily access the data they need. Live dashboards provide accurate, up-to-the-minute tracking of student development and provide administrators with snapshots of how children, classrooms, and centers are performing in real-time. Teachers can easily view unassessed items, as well as the items in which children need the most support, guiding lesson planning and scaffolding.
Robust Reporting
Administrators and teachers can analyze child-, classroom-, or program-level data based on the COR Advantage indicators. The reporting suite includes tables and charts to show performance, growth, and completion data. Use the reports to track development over time, identify strengths and areas for growth, and analyze how children are progressing towards Kindergarten-readiness standards. Customize reports by easily filtering by demographic information such as funding source, age, or race.
Inter-Rater Reliability
The free inter-rater reliability process ensures all teachers can enter accurate, valid, and reliable data that administrators can trust for reporting purposes. All teachers who pass the test with at least 80% proficiency will receive certification valid for 3 years.
Additional Resources
What People Are Saying About Kaymbu
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Marisol
Center Director
“Kaymbu rebuilt trust with our families. Real time updates, photos, and Storyboards eliminate the disconnection parents used to feel between home and school. Our family conferences are smoother because families already understand what their child has been doing and learning!”
Family Engagement
Administrator Perspective
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Darius
Preschool Lead Teacher
“I love knowing families feel like they are part of our classroom. When I send a Storyboard on Friday, families tell me it is their favorite part of the week. They see the learning and can genuinely participate in conversations about their child’s experience.”
Family Engagement
Educator Perspective
-
Vanessa
Parent
“The daily updates change everything. I feel connected to my child’s day in a way I never expected. I know what made her laugh, what she explored, and what she learned. It helps me ask better questions and feel closer to her and her learning.”
Family Engagement
Family Perspective
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Ethan
Curriculum Director
“Reviewing plans and supporting my team has become such a better experience. Having everyone use the same activities means I can easily see what’s happening across classrooms and give coaching that meets teachers where they are. It’s really strengthened the instructional quality throughout our program.”
Instructional Planning
Director Perspective
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Sophia
Toddler Teacher
“My planning process has become both easier and more meaningful. I start with the included lessons, then personalize them based on our classroom’s interests, and individual goals. It saves me hours each week but still feels intentional and connected to what children need.”
Instructional Planning
Educator Perspective
-
Jamal
Guardian
“I understand what my child is learning and what is coming next. When educators share a weekly preview, I know the themes, materials, and ideas they will explore, and need for the week. It helps us continue the learning at home and it makes our conversations so much richer.”
Instructional Planning
Family Perspective
-
Priya
Regional Director
“COR Advantage finally gives me real insight instead of guesswork. I can see progress, understand where classrooms need support, and ensure we are meeting developmental goals. Reporting is faster, clearer, and far less stressful for my team!”
Assessment
Director Perspective
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Luis
Pre K Teacher
“Assessment feels manageable and meaningful. When a child reaches a milestone, I capture it instantly, tag it, and it becomes part of their portfolio. I can actually see growth over time and adjust instruction with confidence.”
Assessment
Educator Perspective
-
Angela
Parent
“The portfolios provided at conferences make everything so clear! I understand what my child is learning, how they are growing, and what areas they may need support in. It never feels confusing or overwhelming. It feels supportive and reassuring.”
Assessment
Family Perspective
-
Denise
Center Administrator
“Kaymbu has completely streamlined our operations. Attendance, ratios, daily sheets, and communications are all organized in one place. I can quickly assess what is happening across the program and support staff more effectively.”
Operations
Director Perspective
-
Ruth
Infant Teacher
“My day is calmer because the paperwork chaos is gone. Attendance, meals, naps, and incident reports are quick and simple. I spend more time with the children and less time managing forms and papers.”
Operations
Educator Perspective
-
Sandra
Parent
“I appreciate the reliability of the updates. I can see check in and check out times, naps, meals, and messages. It gives me peace of mind and helps me plan my child’s evening. Everything I need is right there.”
Operations
Family Perspective
-
Marisol
Center Director
“Kaymbu rebuilt trust with our families. Real time updates, photos, and Storyboards eliminate the disconnection parents used to feel between home and school. Our family conferences are smoother because families already understand what their child has been doing and learning!”
Family Engagement
Administrator Perspective
-
Darius
Preschool Lead Teacher
“I love knowing families feel like they are part of our classroom. When I send a Storyboard on Friday, families tell me it is their favorite part of the week. They see the learning and can genuinely participate in conversations about their child’s experience.”
Family Engagement
Educator Perspective
-
Vanessa
Parent
“The daily updates change everything. I feel connected to my child’s day in a way I never expected. I know what made her laugh, what she explored, and what she learned. It helps me ask better questions and feel closer to her and her learning.”
Family Engagement
Family Perspective
-
Ethan
Curriculum Director
“Reviewing plans and supporting my team has become such a better experience. Having everyone use the same activities means I can easily see what’s happening across classrooms and give coaching that meets teachers where they are. It’s really strengthened the instructional quality throughout our program.”
Instructional Planning
Director Perspective
-
Sophia
Toddler Teacher
“My planning process has become both easier and more meaningful. I start with the included lessons, then personalize them based on our classroom’s interests, and individual goals. It saves me hours each week but still feels intentional and connected to what children need.”
Instructional Planning
Educator Perspective
-
Jamal
Guardian
“I understand what my child is learning and what is coming next. When educators share a weekly preview, I know the themes, materials, and ideas they will explore, and need for the week. It helps us continue the learning at home and it makes our conversations so much richer.”
Instructional Planning
Family Perspective
-
Priya
Regional Director
“COR Advantage finally gives me real insight instead of guesswork. I can see progress, understand where classrooms need support, and ensure we are meeting developmental goals. Reporting is faster, clearer, and far less stressful for my team!”
Assessment
Director Perspective
-
Luis
Pre K Teacher
“Assessment feels manageable and meaningful. When a child reaches a milestone, I capture it instantly, tag it, and it becomes part of their portfolio. I can actually see growth over time and adjust instruction with confidence.”
Assessment
Educator Perspective
-
Angela
Parent
“The portfolios provided at conferences make everything so clear! I understand what my child is learning, how they are growing, and what areas they may need support in. It never feels confusing or overwhelming. It feels supportive and reassuring.”
Assessment
Family Perspective
-
Denise
Center Administrator
“Kaymbu has completely streamlined our operations. Attendance, ratios, daily sheets, and communications are all organized in one place. I can quickly assess what is happening across the program and support staff more effectively.”
Operations
Director Perspective
-
Ruth
Infant Teacher
“My day is calmer because the paperwork chaos is gone. Attendance, meals, naps, and incident reports are quick and simple. I spend more time with the children and less time managing forms and papers.”
Operations
Educator Perspective
-
Sandra
Parent
“I appreciate the reliability of the updates. I can see check in and check out times, naps, meals, and messages. It gives me peace of mind and helps me plan my child’s evening. Everything I need is right there.”
Operations
Family Perspective