# TVAAS

## Help

 School Value-Added

### How This Report Helps You

This report enables you to select data of interest, assess trends over time, and compare results. Use the filters on the left to explore your growth and achievement data. Depending on the assessment, achievement is reported in Normal Curve Equivalents (NCEs) or scale scores and does not reflect proficiency level.

For step-by-step instructions on using the filters, see Interacting with the Report.

### About Value-Added Reports

School Value-Added reports provide reliable measures of the average academic growth a school's students made in each tested grade and subject or course. The growth measures indicate how successful the school was in helping students meet expected growth. The value-added reports can help educators identify relative strengths and areas of concern across grades and subjects. When sufficient data is available, the reports include three years of growth measures and a three-year average growth measure. Examining patterns and trends across years can offer important insights into the effectiveness of the school's programs.

It's important to view the value-added reports in conjunction with the diagnostic reports, which display patterns of growth for groups of students at different achievement levels.

In grades 3–8 in 2015–16, the state of Tennessee suspended testing for mathematics, English language arts, science, and social studies. Therefore, scale scores are not available for these assessments. As a result, the 2016–17 and 2017–18 TVAAS reporting in grades 5–8 for mathematics, English language arts, and science does not include 2015–16 test scores. For more information, see the FAQ or Statistical Models and Business Rules.

### How We Measure Growth

The model we use to calculate growth measures depends on the sequence of assessments administered. Concept of Growth provides complete descriptions of the models.

##### Gain Model

This analytic model is used for subjects that are assessed in consecutive grades.

• ELA and math, grades 4–8
• Science, grades 5-8 (2018 and prior)
##### Predictive Model

This analytic model is used for subjects that are not assessed in consecutive grades (in other words, when students move from one assessment type to another or when students take the assessment in different grades):

• Social studies, grades 6–8
• EOC, all subjects (except chemistry and English III)
• ACT
• All subjects, grade 3 (for districts that submit data for K–2)
• Science, grades 5-8