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OSPI Releases New Way to Measure Student Success
Student growth percentiles highlight learning from year to year

OLYMPIA — December 10, 2013 — The Office of Superintendent of Public Instruction (OSPI) yesterday released a new measure of student performance called Student Growth Percentiles (SGPs). SGPs show how students grow over time compared to their academic peers — students who earned similar scores on a prior test. In other words, SGPs measure the amount of student learning that takes place during one year.

To see an example of how this works, please see OSPI’s five-minute SGP video.

“We shouldn’t look at the data in just one way,” State Superintendent Randy Dorn said. “We need multiple measures. If a school is showing high growth from year to year, we should celebrate that. They’re doing exactly what they need to do to help kids be successful.”

OSPI will report student subgroup, school and district-level median student growth percentiles publicly on the K–12 Data and Reports web page (click on “Assessment” under “Select a Subject Area” and scroll down to the SGP choices). This web page shows school and district aggregations to the public and student-level data to educators and administrators. School districts will decide whether or not to distribute student growth reports to their families and students.

Potential uses for SGP

  • Achievement Index: The State Board of Education plans to use school median SGPs as one of the measures in the revised Achievement Index. The Index is a snapshot of a school's performance based on statewide assessments. It compares how schools perform in reading, writing, math, science and graduation rates.
  • Teacher Evaluations: Districts may eventually use SGPs as one component of teacher evaluations. With the transition to new assessments in 2014–15, OSPI recommends waiting until 2016–17 before incorporating SGPs into teacher evaluations.


About OSPI
The Office of Superintendent of Public Instruction (OSPI) is the primary agency charged with overseeing K–12 education in Washington state. Led by State School Superintendent Randy Dorn, OSPI works with the state’s 295 school districts and nine educational service districts to administer basic education programs and implement education reform on behalf of more than one million public school students.

OSPI provides equal access to all programs and services without discrimination based on sex, race, creed, religion, color, national origin, age, honorably discharged veteran or military status, sexual orientation, gender expression or identity, the presence of any sensory, mental, or physical disability, or the use of a trained dog guide or service animal by a person with a disability. Questions and complaints of alleged discrimination should be directed to the Equity and Civil Rights Director at (360) 725-6162 or P.O. Box 47200, Olympia, WA 98504-7200.

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Nathan Olson
OSPI Communications Manager
(360) 725-6015

For more information

The OSPI Communications Office serves as the central point of contact for local, regional and national media covering K-12 education issues.

Communications Manager
Nathan Olson
(360) 725-6015


   Updated 12/10/2013

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