Summary:
ZIP code 97051 has two high schools — St Helens High School and Plymouth High School — both serving grades 9–12 in St Helens School District 502, and together they enroll 888 students. St Helens High School is by far the larger of the two with 823 students (about 92.7% of the total), while Plymouth High School has just 65 students (about 7.3%). The district as a whole is rated 106th of 141 Oregon districts, at the 25th percentile with 1 star. Test scores in this data set are from 2025–2026, while graduation, absenteeism, spending, and staffing figures are from 2024–2025.
St Helens High School is the relatively stronger of the pair. It graduates 89.5% of students, above the district's 81.6% and the state's 83.0%, and its science proficiency of 40.8% beats both the district (26.8%) and the state (30.6%). Its 2025–2026 school rank is 161st of 271, at the 41st percentile with 2 stars — above the district's overall standing. Chronic absenteeism is 36.9%, better than the district's 38.9% but above the state's 33.5%. The big weakness is math: only 12.3% of students are proficient, far below the state's 32.9% at all grades and its 22.9% at 11th grade. ELA, at 34.2%, is also below the state's 43.8%.
Plymouth High School faces much steeper challenges on the measures that are available. Its graduation rate is 55.2%, about 27.8 points below the state, and its chronic absenteeism of 80.0% is the most extreme figure in the data — roughly 2.4 times the state rate. Its latest available rank is 267th of 268 (0th percentile, 0 stars) in 2023–2024. It spends more per student ($26,934 vs. $20,071) and has a lower student-teacher ratio (19.6 vs. 21.3), and it serves a similarly high share of students eligible for free or reduced lunch (73.85% vs. 72.66%). Its test scores are suppressed by the state, so its academic proficiency is unknown — not zero — and cannot be compared with St Helens or state averages.
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