Summary
Bonny Slope Elementary School is a K–5 school serving 602 students in the Beaverton School District 48J, located in the Cedar Mill / Bethany area of northwest Portland (97229), and it ranks 27th of 709 Oregon elementary schools — the 96th percentile, with 5 stars, in 2025–26. That result is not a one-year fluke: across ten reported years, Bonny Slope has earned 5 stars every single year and has never fallen below the 96th percentile.
In 2025–26 state testing, 74.6% of Bonny Slope students met standards in English language arts, 73.3% in math, and 58.4% in science, versus statewide rates of 43.8%, 32.9%, and 30.6%. Among ten nearby schools it ranks third in both ELA and math. Chronic absenteeism was 15.6% — about half the district rate (28.7%) and well under half the state rate (33.5%). What stands out most is how leanly it does this: per-student spending of $17,879 is second-lowest among eleven nearby schools, and its student-teacher ratio of 19.4 is the highest in that group. For contrast, Barnes Elementary School and William Walker Elementary School — same district, about 2.5 miles away — spend $21,935 and $24,659 per student with much smaller classes, yet post proficiency rates 45–55 points lower.
Two areas are worth watching. First, results dip as students move up: 3rd graders score 76.9% in ELA and 78.5% in math, while 5th graders score 67.5% and 64.5%, and science (tested only in 5th grade) trails the school's own ELA and math. Second, low-income students ranked at the 62nd percentile (3 stars) and special education students at the 86th percentile (4 stars) — solid, but below the school's otherwise elite profile. The closest comparison is Findley Elementary, less than a mile away, which matches Bonny Slope in ELA and edges ahead in math, science, and attendance.
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