Plymouth High School

As a very small senior high in St Helens, Oregon, Plymouth High School caters to 65 students from grades 9 through 12, run under St Helens SD 502. By comparison, Oregon's public schools average about 630 students each, so Plymouth High School sits 90% leaner than that benchmark.

Across the 8 schools in St Helens SD 502 (2,856 students total), Plymouth High School accounts for its share of the district's footprint.

On the student-mix side, Plymouth High School lists that the largest single group is White, at 66% of enrollment. Other groups include 17% Hispanic, 8% multiracial, 3% Black, 3% Native American. That is considerably less White than the county at large, where the share is closer to 85%.

On the income-and-resources front, Plymouth High School records 3 full-time-equivalent teachers, putting the student-to-teacher ratio at about 19.6:1. The state averages about 19.8:1, putting this campus right in line with peers. Around 74% of the student body qualifies for free or reduced-price meals, a number frequently used as a low-income enrollment indicator. By comparison, Columbia County runs at roughly 62%, so the school's eligibility rate is higher than the surrounding baseline.

In the area at large, community-level numbers for Columbia County indicate the typical household earns roughly $87,458 per year, about 20% of the adult population holds a bachelor's degree or above, and the poverty rate sits near 6%. Plymouth High School is one of 23 public schools in Columbia County (combined enrollment of about 6,932 students).

St. Helens Virtual Academy is the nearest neighboring public school, about 0.0 miles from this campus. Within five miles, there are 8 other public schools.

Plymouth High School operates from a town-based location.

Over the past 7-year window. Plymouth High School's enrollment has declined 14% since 2018, when it stood at 76 (now 65). The White share of enrollment shrank from 82% to 66% over that span. Class-load math has loosened: from 16.9:1 in 2018 to 19.6:1 in 2025.

Inside the community feed, recent activity here tends to focus on pickup logistics, teacher feedback, and after-school programs. Members of the school community can share what they know.