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Corbett School

Public, Charter, Alternative Grades K-12
494th
SchoolDigger Rank ?
of 709 Oregon Alternative Schools
Better than 30% of Oregon alternative schools
Summary

Corbett School is an alternative K–12 school in Corbett, Oregon, a small rural community east of Portland, and it serves 1,076 students as the only school in Corbett School District 39, so the school's numbers and the district's numbers are the same.

Its academic profile is split between a strong high school and weaker earlier grades. The graduation rate is 91.3% in 2024–25, well above Oregon's 83.0% and above the state in each of the last five reported years. Eleventh-grade test results also beat the state in all three subjects: ELA 65% vs. 46%, math 31% vs. 22.9%, and science 44.8% vs. 33.8%. Yet all-grade proficiency trails the state in ELA (42% vs. 43.8%), math (25.5% vs. 32.9%), and science (27.2% vs. 30.6%), with the earliest grades lowest — third-grade ELA is 25.9% against the state's 41.5%. So families should expect notably stronger results in the upper grades than in elementary and middle school.

Among nearby alternatives, Corbett's 91.3% graduation rate is higher than Metropolitan Learning Center (73.3%), Alliance Charter Academy (79.3%), Clackamas Web Academy (80.6%), and Metro East Web Academy (51.9%); only Summit Learning Charter is higher, at 98.5%. Chronic absenteeism of 31.1% is slightly better than the state's 33.5% and far better than Metro East (60.2%) and Summit (39.9%), but much higher than Alliance (5.7%) and Clackamas Web (8.1%). Per-student spending is $18,016 with a student-teacher ratio of 20.2 — mid-range on both. Free/reduced lunch has risen from 20.28% in 2022–23 to 36.71% in 2024–25, a shift worth keeping in mind when reading trends.

1,076
Students ?
20.2
Student/teacher ratio ?
$18,016
Per pupil spending ?
36.7%
Free/reduced lunch eligible (2024-25) ?
 35800 E Hist Columbia River Hw
       Corbett, OR  97019-9629

(503) 261-4200

District: Corbett School District 39

Racial breakdown:

White:
77.3%
Hispanic:
9.8%
Two or more races:
9.8%
more
 See top rated Oregon elementary schools

 Compare Corbett School to nearby alternative schools!
At a glance
▲ Ranking trend: Rebounding — 17th percentile in 2025 → 80th in 2026
Strengths
✓91% graduate in 4 years — above the Oregon average (83%)
✓Ranking is rebounding — up to 80th (2026) from a 17th-percentile low (2025)
Worth a look
!Some student groups rank well below the school's overall statewide standing
Students meeting standards (2025-2026) ?
This school33%
District avg33%
Oregon avg37%
Elementary school
494th of 709
Oregon public elementary schools ?
Bottom 30%▼ down 20 pts since 2016
From top 49% (2016) to bottom 30% (2026)
See the entire ranking list of Oregon Elementary Schools →
★★★★★
SchoolDigger rating ?
Middle school
234th of 371
Oregon public middle schools ?
Bottom 37%▼ down 16 pts since 2016
From top 47% (2016) to bottom 37% (2026)
See the entire ranking list of Oregon Middle Schools →
★★★★★
SchoolDigger rating ?
High school
55th of 271
Oregon public high schools ?
Top 20%▼ down 4 pts since 2016
From top 17% (2016) to top 20% (2026)
See the entire ranking list of Oregon High Schools →
★★★★★
SchoolDigger rating ?
Statewide rank percentile over time (100 = the top-ranked school in the state; click a legend item to add a student group)
Elementary school ranking
Show full rank history (all student groups)

All Students

YearAvg scoreStatewide rankOregon percentileRating
202630.7494 of 70930.3%★★☆☆☆
202542.8369 of 70647.7%★★☆☆☆
202449.8309 of 71056.5%★★★☆☆
202368.7181 of 70674.4%★★★★☆
202257.0252 of 70664.3%★★★☆☆
201949.4347 of 70550.8%★★★☆☆
201854.3309 of 70956.4%★★★☆☆
201754.2293 of 70158.2%★★★☆☆
201648.5345 of 69750.5%★★★☆☆
201553.8295 of 70658.2%★★★☆☆
201447.4381 of 69545.2%★★☆☆☆
201354.4328 of 70753.6%★★★☆☆
201249.2391 of 73046.4%★★☆☆☆
201135.2516 of 69525.8%★☆☆☆☆
201040.6450 of 67433.2%★★☆☆☆

Female

YearAvg scoreStatewide rankOregon percentileRating
202629.9468 of 65528.5%★☆☆☆☆
202540.0362 of 65344.6%★★☆☆☆
202441.2368 of 65844.1%★★☆☆☆
202363.0200 of 65269.3%★★★☆☆
202249.9285 of 64655.9%★★★☆☆
201949.0312 of 62149.8%★★☆☆☆
201855.4288 of 68157.7%★★★☆☆

Hispanic

YearAvg scoreStatewide rankOregon percentileRating
202653.9140 of 37762.9%★★★☆☆
201985.322 of 36494.0%★★★★★
201877.953 of 47588.8%★★★★☆

Low Socio Economic Status

YearAvg scoreStatewide rankOregon percentileRating
202628.1409 of 52121.5%★☆☆☆☆
202543.0288 of 51844.4%★★☆☆☆
202449.7216 of 52358.7%★★★☆☆
202331.8427 of 59528.2%★☆☆☆☆
202257.5249 of 70364.6%★★★☆☆
201968.1127 of 59778.7%★★★★☆
201841.5395 of 64038.3%★★☆☆☆

Male

YearAvg scoreStatewide rankOregon percentileRating
202631.5446 of 65732.1%★★☆☆☆
202546.5316 of 66452.4%★★★☆☆
202459.0226 of 66265.9%★★★☆☆
202371.8146 of 66578.0%★★★★☆
202262.2197 of 65469.9%★★★★☆
201948.6303 of 62351.4%★★★☆☆
201851.9320 of 68052.9%★★★☆☆

Multi-racial

YearAvg scoreStatewide rankOregon percentileRating
202612.774 of 796.3%☆☆☆☆☆
201839.3135 of 21236.3%★★☆☆☆

Special Education

YearAvg scoreStatewide rankOregon percentileRating
202629.0255 of 35528.2%★☆☆☆☆
202537.5195 of 35244.6%★★☆☆☆
202426.2232 of 29922.4%★☆☆☆☆
202327.5180 of 23122.1%★☆☆☆☆
202235.2141 of 21534.4%★★☆☆☆
201946.1135 of 30355.4%★★★☆☆
201851.2172 of 48164.2%★★★☆☆

White

YearAvg scoreStatewide rankOregon percentileRating
202626.1519 of 67022.5%★☆☆☆☆
202539.8390 of 66941.7%★★☆☆☆
202445.1342 of 67049.0%★★☆☆☆
202362.9225 of 65665.7%★★★☆☆
202248.1320 of 66652.0%★★★☆☆
201938.5425 of 66235.8%★★☆☆☆
201844.3387 of 68343.3%★★☆☆☆
Middle school ranking
Show full rank history (all student groups)

All Students

YearAvg scoreStatewide rankOregon percentileRating
202637.0234 of 37136.9%★★☆☆☆
202543.7185 of 36849.7%★★★☆☆
202456.2135 of 37163.6%★★★☆☆
202355.5143 of 38062.4%★★★☆☆
202260.8117 of 36768.1%★★★☆☆
201950.2176 of 37953.6%★★★☆☆
201851.6174 of 38454.7%★★★☆☆
201742.4222 of 38241.9%★★☆☆☆
201651.3180 of 38353.0%★★★☆☆
201557.0145 of 38161.9%★★★☆☆
201447.6210 of 38245.0%★★☆☆☆
201353.1184 of 37751.2%★★★☆☆
201252.6200 of 39549.4%★★★☆☆
201158.2147 of 35758.8%★★★☆☆
201061.9125 of 34363.6%★★★☆☆

Female

YearAvg scoreStatewide rankOregon percentileRating
202632.8223 of 32130.5%★★☆☆☆
202538.1188 of 31640.5%★★☆☆☆
202452.9123 of 31360.7%★★★☆☆
202343.5167 of 32348.3%★★☆☆☆
202269.674 of 31076.1%★★★★☆
201943.8166 of 27740.1%★★☆☆☆
201848.6179 of 34247.7%★★☆☆☆

Hispanic

YearAvg scoreStatewide rankOregon percentileRating
202270.623 of 19488.1%★★★★☆
201861.752 of 21075.2%★★★★☆

Low Socio Economic Status

YearAvg scoreStatewide rankOregon percentileRating
202641.3142 of 25644.5%★★☆☆☆
202577.023 of 24090.4%★★★★★
202450.598 of 24459.8%★★★☆☆
202348.0150 of 31251.9%★★★☆☆
202261.2114 of 36468.7%★★★☆☆
201948.3131 of 28253.5%★★★☆☆
201835.2233 of 32528.3%★☆☆☆☆

Male

YearAvg scoreStatewide rankOregon percentileRating
202642.1179 of 32745.3%★★☆☆☆
202547.2153 of 33053.6%★★★☆☆
202459.6105 of 32367.5%★★★☆☆
202369.666 of 31879.2%★★★★☆
202254.4123 of 31260.6%★★★☆☆
201958.8112 of 29161.5%★★★☆☆
201853.5144 of 34157.8%★★★☆☆

Special Education

YearAvg scoreStatewide rankOregon percentileRating
202615.7192 of 1930.5%☆☆☆☆☆
202361.029 of 15080.7%★★★★☆
202275.415 of 14389.5%★★★★★
201943.562 of 15660.3%★★★☆☆
201856.554 of 20673.8%★★★★☆

White

YearAvg scoreStatewide rankOregon percentileRating
202637.3224 of 35436.7%★★☆☆☆
202539.8212 of 35139.6%★★☆☆☆
202449.4161 of 34953.9%★★★☆☆
202345.9174 of 36051.7%★★★☆☆
202251.4161 of 35554.6%★★★☆☆
201941.8202 of 34441.3%★★☆☆☆
201844.5203 of 35743.1%★★☆☆☆
High school ranking
Show full rank history (all student groups)

All Students

YearAvg scoreStatewide rankOregon percentileRating
202676.755 of 27179.7%★★★★☆
202521.6223 of 27017.4%★☆☆☆☆
202449.6119 of 26855.6%★★★☆☆
202385.429 of 25888.8%★★★★☆
202289.119 of 24192.1%★★★★★
201988.214 of 26694.7%★★★★★
201863.290 of 28368.2%★★★☆☆
201762.096 of 28366.1%★★★☆☆
201674.749 of 29283.2%★★★★☆
201543.4185 of 29236.6%★★☆☆☆
201467.593 of 30169.1%★★★☆☆
201377.643 of 30385.8%★★★★☆
201282.825 of 30891.9%★★★★★
201182.326 of 29991.3%★★★★★
201087.714 of 28595.1%★★★★★

Asian

YearAvg scoreStatewide rankOregon percentileRating
201841.227 of 4337.2%★★☆☆☆

Female

YearAvg scoreStatewide rankOregon percentileRating
202665.263 of 21470.6%★★★★☆
202545.7104 of 21150.7%★★★☆☆
202440.8119 of 21344.1%★★☆☆☆
202387.818 of 20091.0%★★★★★
202291.316 of 19491.8%★★★★★
201989.88 of 19996.0%★★★★★
201869.569 of 25172.5%★★★★☆

Low Socio Economic Status

YearAvg scoreStatewide rankOregon percentileRating
202483.219 of 17088.8%★★★★☆
202289.318 of 24192.5%★★★★★
201990.49 of 22996.1%★★★★★
201829.3196 of 25422.8%★☆☆☆☆

Male

YearAvg scoreStatewide rankOregon percentileRating
202679.441 of 22681.9%★★★★☆
202516.6210 of 23711.4%★☆☆☆☆
202455.879 of 21663.4%★★★☆☆
202383.128 of 21486.9%★★★★☆
202284.918 of 20091.0%★★★★★
201984.421 of 20689.8%★★★★★
201855.2105 of 25058.0%★★★☆☆

Multi-racial

YearAvg scoreStatewide rankOregon percentileRating
201838.167 of 9831.6%★★☆☆☆

Special Education

YearAvg scoreStatewide rankOregon percentileRating
201860.535 of 13273.5%★★★★☆

White

YearAvg scoreStatewide rankOregon percentileRating
202667.570 of 25172.1%★★★★☆
202519.6213 of 25014.8%★☆☆☆☆
202439.0143 of 24441.4%★★☆☆☆
202379.042 of 23782.3%★★★★☆
202287.517 of 22892.5%★★★★★
201983.225 of 24589.8%★★★★★
201854.5124 of 26653.4%★★★☆☆
How student groups rank statewide ? (each group's percentile vs the same group at other schools — higher is better; the +/- beside each compares the group with this school's overall percentile)
Elementary school
Hispanic (2026)63rd percentile+33 vs school
Male (2026)32nd percentile~ school
Female (2026)29th percentile~ school
Special Education (2026)28th percentile~ school
White (2026)23rd percentile-8 vs school
Low Socio Economic Status (2026)21st percentile-9 vs school
Multi-racial (2026)6th percentile-24 vs school
Middle school
Hispanic (2022)88th percentile+20 vs school
Male (2026)45th percentile+8 vs school
Low Socio Economic Status (2026)45th percentile+8 vs school
White (2026)37th percentile~ school
Female (2026)31st percentile-6 vs school
Special Education (2026)1st percentile-36 vs school
High school
Low Socio Economic Status (2024)89th percentile+33 vs school
Male (2026)82nd percentile~ school
Special Education (2018)73rd percentile+5 vs school
White (2026)72nd percentile-8 vs school
Female (2026)71st percentile-9 vs school
Asian (2018)37th percentile-31 vs school
Multi-racial (2018)32nd percentile-37 vs school
By subject vs Oregon (2025-2026) ?
English Language Arts42%~ state avg
Science27%-3 vs state
Mathematics26%-7 vs state

1.0
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What people are saying
by a parent
Thursday, February 10, 2011

Open Quote I'm here to tell you The Emperor has no clothes. The ratings for this school (High School) are based on an over simplistic formula. It does not accurately gauge the quality of the school. Check it out yourself. We came to this school with high expectations. We have been utterly dissillusioned. They don't give out grades (no accountability), discourage parent involvment and have some very young and inexperienced teachers. I'm sure there are good teachers here but we did not get one of them. Unfortunately the administration is dictatorial and view parents with disdain. Don't believe the hype! Close Quote





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Frequently Asked Questions about Corbett School

Students at Corbett School are 77% White, 10% Hispanic, 10% Two or more races, 1% American Indian.

In the 2024-25 school year, 1,076 students attended Corbett School.

Corbett School ranks 494th of 709 Oregon alternative schools. SchoolDigger rates this school 2 stars out of 5.

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Latest Oregon data All new data »
2015–16 through 2017–18 immunization rates (updated)Oct 20, 2026
2014–15 through 2025–26 immunization rates (updated)Oct 19, 2026
2025–26 OSAS test scoresSep 25, 2026
2023–24 through 2024–25 school spending dataAug 24, 2026


SchoolDigger data sources: National Center for Education Statistics, U.S. Department of Education, the U.S. Census Bureau and the Oregon Department of Education.

IMPORTANT DISCLAIMERS: Not all boundaries are included. We make every effort to ensure that boundaries are up-to-date. But it's important to note that these are approximations and are for general informational purposes only. To verify legal descriptions of boundaries or school locations, contact your local tax assessor's office and/or school district.

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