Compiled from official source data by PlainSchools.
12 public K-12 schools in Lake Oswego from NCES Common Core of Data: enrollment, grade span, demographics, and Civil Rights Data Collection statistics for every active campus.
According to NCES CCD 2024-25, Lake Oswego has more public-school enrollment than 68% of the 4,487 US cities in this directory. Lake Oswego's average Resource Investment Index ranks above most listed cities even though its student-teacher ratio is on the more crowded side of the national city distribution. That is a useful mismatch, not a contradiction: counselor access, gifted programs, and attendance can lift the composite while classroom staffing remains comparatively tight. Families should inspect the component scores on each school profile instead of reading the city index as a shorthand for small classes.
The school portfolio is elementary-weighted
7 of Lake Oswego's 12 listed schools are elementary campuses. That composition means citywide enrollment and staffing averages are influenced more by early-grade operating patterns than by the city's 2 middle and 3 high-school records. Families comparing later grades should rely on those individual rows rather than the all-school mean.
The composite and staffing measures point in different directions
Lake Oswego's average Resource Investment Index sits at the 71st percentile, while its teacher-staffing measure sits at the 30th percentile. The 41-point percentile gap is a reminder that the index is not a class-size score: counselors, gifted-program reporting, and attendance also affect it. Compare those components directly when two schools have similar index totals; the same headline score can arise from a different mix of reported resources.
City enrollment
Top 32%
School count
Top 31%
Resource Index average
71st percentile
Teacher staffing
30th percentile
Lake Oswego Senior High School accounts for 18.8% of all Lake Oswego public-school enrollment
That concentration means Lake Oswego-wide averages can mask substantial variation outside the largest entity. Grade level: High. The share measures enrollment concentration only; it does not establish how districts allocate programs, capital, or staff. Enrollment-weighted aggregates give this entity more weight than any smaller peer, while an unweighted entity average treats every record equally.
Lake Oswego school enrollment varies 58× across entities
Lake Oswego school enrollment ranges from 22 students (lowest) to 1,282 students (highest), a spread of 1,260 students. That ratio is among the widest observed and reflects extreme heterogeneity inside a single city, with small specialty programs listed alongside large comprehensive campuses. Per-school staffing and program breadth can differ sharply at opposite ends of that enrollment range, so the city average should not be treated as a typical campus.
Lake Oswego operates one school district — a single-district system
Lake Oswego's listed schools share one district boundary, budget authority, and reporting chain. That makes citywide and districtwide governance easier to compare, but it does not make individual campuses uniform: grade configuration, staffing, programs, and student need can still vary materially within the same school district.
Lake Oswego student-teacher ratio is 17.4:1 — near the typical range (US average ~15.7) — citywide staffing is neither unusually lean nor unusually crowded by this measure
student-teacher ratio is the simplest comparative metric but it does not capture the full picture: the ratio counts FTE classroom teachers against total enrollment, push-in specialists, English-language aides, special-education co-teachers, and counselors are not included in most reporting Variation between sub-units within Lake Oswego is typically wider than the Lake Oswego-aggregate figure suggests.
Most racially and ethnically mixed schools in Lake Oswego
Ranked by the Simpson student-body diversity index (0-100) from NCES race and ethnicity data, where higher means a more evenly mixed student body. It measures mix, not quality.
What do families ask about schools in Lake Oswego?
Which Lake Oswego school has the highest Resource Investment Index? ▼
Palisades World Language School has the highest Resource Investment Index among the Lake Oswego schools in this federal-data comparison at 55/100. The index summarizes reported staffing, counseling, gifted-program, and attendance inputs; it is not an academic rating.
How many schools are in Lake Oswego, OR? ▼
Lake Oswego has 12 public schools with a total enrollment of 6,827 students. 1 are charter schools. Average student-teacher ratio: 17.4:1.
Data from NCES Common Core of Data (CCD) 2024-25 and Civil Rights Data Collection (CRDC) 2021-22. The Resource Investment Index uses reported student-teacher ratio,
counselor access, gifted programs, and attendance; it is not an academic rating. Cities must include at least five schools to be listed. This public-data comparison is for informational purposes:
verify current enrollment, attendance boundaries, and programs with the school district before acting. See the guide to understanding NCES data.
