Lewis and Clark Montessori Charter School
Test scores
OSAS 2024-25 . % ProficientWhat this means: On the OSAS, Oregon's statewide test, about 43 of every 100 students at this school read and write at grade level and about 27 of 100 do math at grade level. Across all Oregon schools, those numbers are about 43 and 32. Reading and writing scores are down about 6 points since 2023, while math scores are up about 3 points.
7-year change
SY 2017-18 vs SY 2024-25About Lewis and Clark Montessori Charter School
Lewis and Clark Montessori Charter School is a moderately sized elementary campus in Gresham, Oregon, operated by Gresham-Barlow SD 10J. The school educates 288 students in grades K through 8.
Gresham-Barlow SD 10J runs 20 schools in total, collectively educating 11,345 students. Lewis and Clark Montessori Charter School is one of those campuses.
For racial and ethnic makeup, Lewis and Clark Montessori Charter School logs that 74% of the student body identifies as White. Other groups include 15% Hispanic, 7% multiracial, 2% Asian.
Looking at school resources, Lewis and Clark Montessori Charter School logs 7 full-time-equivalent teachers, putting the student-to-teacher ratio at about 41.1:1. The state averages around 16.5:1, so this campus is higher than the state norm typical.
Zooming out to the county, Multnomah County reports that the typical household earns roughly $88,766 per year, 49% of adults hold a bachelor's degree or higher, and roughly 7% of residents live below the federal poverty line. In all, Multnomah County runs 169 public schools (combined enrollment of about 81,096 students), of which Lewis and Clark Montessori Charter School is one.
Nearest neighbor: Gresham High School, around 0.5 miles off. Counting just inside five miles, 8 other public schools cluster around Lewis and Clark Montessori Charter School.
The school occupies a commuter-belt site. As a public charter, Lewis and Clark Montessori Charter School runs on public funding but with greater curricular and operational autonomy than a typical district school.
Looking at the recent track record. Looking back 7 years, enrollment at Lewis and Clark Montessori Charter School has fell 20%, going from 359 students in 2018 to 288 in 2025. The student-to-teacher ratio grew from 20.4:1 in 2018 to 41.1:1 today.
On the community side, members of the Lewis and Clark Montessori Charter School community share and discuss enrollment questions, classroom assignments, and PTA news. Members of the school community can share what they know.
Multnomah County at a glance
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