About Ohio EVAAS
Ohio's Value-Added component measures and evaluates the impact schools and teachers have on their students' academic progress. Value-added measures student growth, not whether the student is proficient on the state assessment. The Education Value-added Assessment System (EVAAS) uses the Ohio value-added measure to produce interactive reports that help educators evaluate practices and implement programs that best meet the needs of their students, as well as make informed decisions about where to focus resources to ensure growth opportunities for all students.
These reports allow for comparison of schools and districts across the state, and include interactive reports for selecting the data of interest.See Comparison Reports
Compare a school's growth to other schools in the state.
View growth of all schools within a particular district.
Access interactive graphs of growth, achievement, and student background for districts and schools in the state.
These reports show academic growth for all districts in Ohio. This information is available as a measure that combines all tested subjects and grades as well as for individually tested subjects and grades.See District Reports
View growth by subject, grade, and year for a particular district.
View accountability data across subjects and grades, as well as report card subgroups for a particular school.
These reports show academic growth for all schools in Ohio. This information is available as a measure that combines all tested subjects and grades as well as for individually tested subjects and grades.See School Reports
Frequently Asked Questions
- Measures a student's performance at one single point in time
- Can be highly correlated with a student's demographics
- Compares student performance to a standard
- Is critical to a student's post-secondary opportunities
- Measures a student's progress across time
- Is not related to a student's demographics
- Compares student performance to their own prior performance
- Is critical to ensuring a student's future academic success
Value-added is a statistical analysis used to measure the impact of districts, schools, and teachers on the academic progress rates of groups of students from year to year. Conceptually and as a simple explanation, a value-added measure is calculated in the following manner:
- Growth = Current achievement compared to all prior achievement with achievement being measured by a quality assessment.
The methodology used in Ohio for value-added was developed over twenty years ago by researchers at the University of Tennessee, Knoxville. This model addresses many common concerns, whereas more simplistic models for value-added assessment yield results that may be confounded by measurement error and exclude students who have missing data in their assessment history. The methodology used by Ohio has been published since 1997, and these models have been peer-reviewed nationally.
EVAAS is a statistical analysis of student assessment data, such as the Ohio State Tests in English Language Arts, Mathematics, and Science, including grade-specific tests for grades 3 through 8 and end-of-course tests. It provides districts and schools with progress data to add to achievement data. This lens of measuring student learning provides educators with valuable information to ensure they are meeting the academic needs of cohorts of students as well as individual students.
To help you understand EVAAS analysis, think of academic growth in terms of a child's physical growth and the growth charts utilized by a child's physician. Growth charts are an important tool for monitoring a child's development, but they are just one of the indicators used by the physician to ensure a child is growing at the minimum expected level and on the trajectory to grow as expected. A physician would not use a growth chart in isolation to diagnose a child; however, the growth chart would provide valuable information that may warrant further exploration.
EVAAS offers an objective and reliable way to measure student progress and the influence Ohio's public districts or schools have on students' educational experiences. With this information, educators are better able to:
- Monitor the progress of all groups of students from low-achieving to high-achieving, ensuring growth opportunities for students across the achievement spectrum
- Measure student achievement as a result of the impact of educational practices, classroom curricula, instructional methods, and professional development
- Make informed, data-driven decisions about where to focus resources to help students make greater progress and perform at higher achievement levels
- Modify and differentiate instruction to address the needs of all students
- Align professional development efforts in the areas of greatest need
- Network with other districts or schools that may yield different growth results
- Identify programs that best meet the needs of their students
EVAAS provides two types of information: value-added (or growth) data on cohorts of students and student level projection data.
The value-added, or growth, model analyzes available data from previous years (looking back) to help schools evaluate how much academic growth cohorts of students have made in a school year by answering questions such as: Did a group or subgroup of students make expected growth for a year's worth of schooling?
The projection model uses the data already analyzed to help schools project (looking forward) to the future by answering questions such as: What is the percent likelihood of a student being proficient on a future OST end-of-grade, end-of-course, or college readiness exam? Projection data can be used for intervention planning and resource reallocation.
EVAAS is available for the following test areas:
- English Language Arts and mathematics in grades four through eight
- Science in grades five and eight
- Algebra I; Mathematics I and ll; Geometry; English Language Arts II; Biology; American US History; American US Government