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Individual Value-Added (IVA)

How does DCPS include student achievement in its evaluation system?

DCPS uses two student achievement measures in IMPACT, our system for measuring teacher performance: Individual Value-Added Student Achievement Data (IVA) and Teacher-Assessed Student Achievement Data (TAS).

Teachers in tested subjects and grades have an IVA score as part of their overall IMPACT rating. These teachers are in IMPACT Group 1. IVA is calculated for grades, which have state standardized test scores from both the prior and current school year. In addition, all teachers have a TAS score, as measured by rigorous assessments other than the state standardized test, as part of their overall IMPACT rating.


What is Individual Value-Added Student Achievement Data (IVA) and why does DCPS use it?

Measuring a teacher’s impact on student learning can be challenging. After all, students start the year at different skill levels, and they all face different factors inside and outside the classroom that affect how they learn.

At its core, IVA is a way of addressing these challenges. It helps us estimate a teacher’s impact on student learning over the course of the school year, as evidenced by a state standardized assessment, by taking into account other factors such as a student’s incoming test scores, special education status, and eligibility for free or reduced-price meals, to name a few. In short, IVA helps us understand what the teacher did, apart from everything else, in a given school year.

DCPS is committed to using IVA as part of IMPACT, because we believe that clear evidence of student learning is an essential part of being an effective teacher. Additionally, research shows that IVA, when combined with other measures, strongly predicts teacher performance.

Why is DCPS not including IVA in IMPACT for the 2015-2016 school year?

From 2009 to 2014, DCPS included IVA as a component in IMPACT because we believe IVA is a key measure of teacher performance. During this time, DCPS used DC CAS data to produce IVA scores.

In the 2014-2015 school year, DCPS transitioned to a new state standardized assessment system, the Partnership for Assessment of Readiness for College and Career (PARCC) assessments, to provide an even better measure of what students should know and be able to do based on the Common Core State Standards (CCSS), rigorous national standards which the district adopted in 2012.

Due to the timeline by which DCPS will receive results from the first administration of the PARCC assessments, IVA will not be included in final IMPACT scores in 2015–2016. In future years, PARCC results will be available in time to include IVA scores in IMPACT.

Please contact the IMPACT team at (202) 719-6553 or [email protected] with any additional questions.

Download Additional Information

For more detailed information about value-added, please download:

For more information on IVA this school year, please see the Group 1 IMPACT guidebook.