Assessment is how student learning is measured, from quick teacher check-ins and quizzes, to final course exams and state tests.

All public schools in the U.S. are required to systematically assess student learning and report participation and results in school accountability systems. Students in Oregon are assessed periodically to measure proficiency in state and district standards, including completing statewide assessments in certain grades. Statewide assessment results provide important information for students, parents, teachers, schools and districts.

The Oregon Statewide Assessment System, or OSAS, refers to Oregon’s main statewide tests (formerly Oregon Assessment of Knowledge & Skills, OAKS).

The purpose of these tests, administered annually to students in grades 3–8 and 11, is to assess district, school, and individual student progress toward meeting Oregon’s state standards in English language arts (reading and writing), math and science. In some other districts, students in a few grades also complete the state test in social sciences.

In 2024–25, the statewide testing window in which Oregon schools will administer state tests is between February 4, 2025 and June 13, 2025.

Oregon adopted the Common Core State Standards in 2010, replacing our previous state standards in math and language arts. Since the state’s learning standards in math and language arts changed, the statewide assessments of students’ learning in these areas also changed.

Oregon’s old assessments of math, reading and writing were replaced by new assessments of math and language arts in 2015. The new tests were developed by the Smarter Balanced Assessment Consortium, a state-led partnership including Oregon and about 20 other states. These state tests may be referred to as the Smarter Balanced assessments or as OSAS or OAKS, as they are part of the Oregon Statewide Assessment System.

The new generation of assessments of math and English language arts are not one-size-fits-all multiple-choice tests. Students’ knowledge and skills are assessed in a variety of ways, including selected-response questions, open-response questions and performance tasks.

These state tests are computer adaptive testing. The computer program adjusts the difficulty of questions throughout the test based on the student’s responses. For example, a student who answers a question correctly will be asked a more challenging question next, while a student who answers a question incorrectly will then get an easier question. By adapting to the student’s responses as the test is taking place, the assessment can present questions targeted to the student’s knowledge and ability level.

Check out a practice test (log in as guest, select grade, and choose a practice test (PT) or training test) 

A student’s scores have no consequences for their grades, credits, or advancement to the next grade, although they may be used to inform appropriate course placement.

Assessment results provide important information for students, parents, teachers, schools and districts. The Smarter Balanced tests provide more detailed and useful information about each student’s learning and progress toward being ready for college and career than the old OAKS tests did. Parents receive more information about their students’ progress toward being ready for the next school level, college and careers. Teachers, schools and districts receive more useful diagnostic information that can be used to support individual students and improve instructional programs.

The statewide assessments are not time-limited tests, so testing times vary. The length is typically shorter for younger students and longer for older students.

Most students who participated in field testing of the language arts and math tests completed each of the two tests within about 3½ hours total. Some students will finish faster than this. Some students will take longer and can have as much time as they need. Each test is spread out over multiple sessions and days, not taken all at once.

Students take the state tests of math and language arts only once in a given year. Previously many students completed the state tests multiple times each year.

In addition to the adaptive nature of the tests, Oregon’s statewide assessments include opportunities for supports referred to as universal tools, designated supports and specific accommodations. For every student with an individualized education program, the individual accommodations and supports are identified and listed as part of the annual IEP process. If you have questions, please contact your case manager.

Yes. Under Oregon law, a parent or adult student may opt out of Oregon’s summative statewide assessments of math and language arts for any reason, by submitting a form provided each year by the Oregon Department of Education. Parents can submit a written request to opt out of science testing on the basis of accommodating a student’s disability or religious beliefs.

2024–25 annual state testing notice and opt out form (English)
2024-25 annual state testing  notice and opt out form (Spanish)

• Check out a practice test

• Smarter Balanced Assessment Consortium

• Oregon Statewide Assessment System Design and Purpose