Table of Contents

Teacher Custom Diagnostic

Understanding the Report


A simple growth measure is created for each achievement group. These values indicate the amount of academic growth students in the group made, on average, in the selected grade and subject or course. Use caution when interpreting these growth measures. Keep in mind that students are not weighted based on the teacher's instructional responsibility as they are for value-added reports. The values in this report are not the result of the statistically rigorous analyses that generate growth measures for the value-added reports. For more information, see Technical Details.

Expected Growth

Expected Growth represents the point at which the students' scores, on average, align with expectations.

Expected Growth signifies the minimum amount of academic growth that educators should expect a group of students to make in a subject and grade or course. In general, this signifies appropriate, expected academic growth. Simply put, the expectation is that regardless of their entering achievement level, students served by each district, school, or teacher should at least make enough progress to maintain their achievement level relative to their peers. This is a reasonable target for educators who serve all types of students. Expected Growth is represented by a horizontal green line in the graph.

Standard Error

All growth measures on the TVAAS reports are estimates. All estimates have some amount of measurement error, which is known as the standard error. This value defines a confidence band around the growth measure, which describes how strong the evidence is that the group of students exceeded, met, or fell short of expected growth.

For more information about standard errors, see Growth Measures and Standard Errors.

Low, Middle, and High Groups

The selected students are divided into three equal groups by achievement level. The Low group includes the students whose achievement falls into the lowest third of students you selected. The High group includes the students whose achievement falls into the highest third of students you selected.

Students in the Low group are not necessarily low achieving students, and students in the High group are not necessarily high achieving. The placement simply indicates where the students' achievement in the selected subject and grade falls among the students you included in the report.

For more information about how students are placed into groups, see Technical Details.

To view the list of students in an achievement group, click to expand the list on the right side of the report. From the lists, you can click a student's name to view the student's testing history.

Viewing Bar Chart or Pie Chart

The bar chart is displayed by default. To change the chart from vertical to horizontal, choose from the Chart Orientation drop-down menu below the chart. To view the pie chart, choose from the menu below the chart.

The size of each pie slice represents the percentage of students who were in each of the achievement groups.

Color Coding

The slices of the chart are color-coded to indicate whether the data suggests that students in each achievement group exceeded, met, or fell short of expected growth. You'll find a legend for the color coding at the bottom of the report.

For information about interpreting the charts, see Interpreting the Data.

Filtering by Student Group

By default, the report includes all students the teacher taught in the selected grade and subject or course. You can use this filter to view the report for a subset of students.

To filter the list of students included in the report, click Filter by: Student Group above the graph. In the Student Groups window, you can choose any combination of race, gender, and demographic groups.

If you choose more than one group within a category, the report includes students who are in either group. For example, if you choose Black or African American and Hispanic, the report includes both Black/African American students and Hispanic students.

If you choose multiple groups across categories, the report includes only students who are in the selected groups in all categories. For example, if you choose Male and Students with Disabilities, the report includes only males who are identified as students with disabilities.

When you are finished making selections, click Submit. The report includes only those groups of students you selected.

To remove a demographic from your list of filters, click the X next to the demographic. To remove all demographic filters at once, click Student Groups. In the Student Groups window, click Clear and then Submit. The report now includes all students in the selected grade and subject or course.

Average NCE

The Average NCE column is shown for assessments analyzed with the gain model. This value represents the average of the student's NCE scores for the most recent prior year available (labeled Entering NCE) and current year (labeled Exiting NCE).