Summary:
ZIP code 97138, which includes Seaside, Oregon, has one public middle school: Seaside Middle School, serving grades 6–8 and about 355 students as part of Seaside School District 10.
Because there is only one middle school in this ZIP code, parents are mainly comparing Seaside Middle School with its district and the state. The school ranked 247th of 371 Oregon middle schools in 2025–26, with a 33rd percentile rank and 2 stars. It was 209th of 368 (43rd percentile) in 2024–25 and 237th of 371 (36th percentile) in 2023–24, also with 2 stars. The district is ranked 99th of 141 in Oregon, with a 30th percentile rank and 2 stars. In 2025–26 OSAS scores, all-grade proficiency was 40% in English Language Arts, 22.7% in math, and 12.5% in science. Those were below district averages (41.6%, 26.9%, 20.3%) and state averages (43.8%, 32.9%, 30.6%). Science is the largest gap, and math is also well below the state.
By grade, performance generally drops as students get older. Sixth-grade ELA was a bright spot at 45.5%, above the state’s 41.8%. But 7th-grade ELA was 40.2% vs. 45.3% statewide, and 8th-grade ELA was 34% vs. 41.5%. Math was 26.3% in 6th, 23.9% in 7th, and 17.4% in 8th, compared with state rates near 30%. Eighth-grade science was 12.5% vs. 27.7% statewide. Chronic absenteeism was 40.4%, slightly above the district’s 39.6% and above the state’s 33.5%. The school reports $20,173 per student and a 15.4:1 student-teacher ratio, but no district or state comparators are provided. The free/reduced lunch percentage is blank, so it is unavailable, not zero.
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