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Best Public Schools in Ontario, OR

At a glance

Schools

2,668

Students

Districts

Top rankedAnnex Charter School310^th of 709 Oregon elementary schools

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Biggest riser

Annex Charter School up 225 spots statewide this year

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Smallest classes

May Roberts Primary School 14.3 students per teacher

Compare Oregon cities →See the top-ranked Oregon schools →

Summary:

Schools in Ontario, Oregon include seven schools serving K–12 students—four elementary, one middle, one high, and one alternative—with 2,668 students across Ontario School District 8C, Oregon Department of Education, and Annex School District 29. Ontario School District 8C operates five schools (2,170 students): May Roberts Primary School (K–1), Aiken Elementary School (2–3), Alameda Intermediate School (4–5), Ontario Middle School (6–8), and Ontario High School (9–12). Annex Charter School serves K–8 (131 students), and Four Rivers Community School serves K–12 (367 students).

The clearest standouts are Four Rivers Community School and Annex Charter School. Four Rivers has a 5-star district rating, ranked 13 out of 141 (91st percentile), a 100.0% graduation rate vs. 83.0% for the state, and all-grade ELA of 48.6% vs. 43.8% statewide; its math (27.9%) is below the state’s 32.9%, and science (29.3%) is just below the state’s 30.6%. Its 2023–24 chronic absenteeism was 8.0%; 2024–25 school-level absenteeism is not reported. Annex has a 4-star rating, ranked 41 out of 141 (71st percentile), and is the only listed school above the state in all three all-grade subjects: ELA 48.9% vs. 43.8%, math 41.3% vs. 32.9%, and science 36.4% vs. 30.6%. Annex also has low chronic absenteeism (10.9%) and a free/reduced-lunch rate of 48.09%.

Within Ontario School District 8C, the district is ranked 118 out of 141 with 1 star. Ontario High School, the largest school, has an 88.8% graduation rate above the district and state, but all-grade ELA is 27.7%, math is under 5%, and science is 19.3%; its chronic absenteeism is 26.6%, the highest locally but below the state’s 33.5%. Ontario Middle School has ELA 37.1% and math 26.0%, above district averages but below state; science is 14.1%. Alameda Intermediate School reports ELA 39.9%, math 27.7%, and science 19.0%. Aiken Elementary School has the weakest ELA result at 13.8%, while math is 24.5%. May Roberts Primary School has no OSAS tests listed, the highest per-pupil spending at $24,906, and the lowest student-teacher ratio at 14.3. District free/reduced-lunch rates are around or above 100%, compared with lower rates at the non-district schools.

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Ranking:

E Elementary M Middle H High A Alternative P Private

Choose columns to see: Summary School Students/Teachers Ranking Test Scores Vaccination Finance All

School													Students/Teachers											Ranking (2026)				Ranking (2025)				OSAS English Language Arts (2026)								OSAS Mathematics (2026)								OSAS Science (2026)				Vaccination (2025-26)		Per Pupil Expenditures (2025)
Name	Type	Grades	Address	City	Zip	County	District	Is Charter	Is Magnet	Is Virtual	Is Title I	Phone	Enrollment	Full-time Teachers	Student/ Teacher Ratio	Directly certified (2024-25)	White	Black	Hispanic	Asian	American Indian	Pacific Islander	Two or More Races	Average Standard Score (2026)	Statewide Rank (2026)	State Percentile (2026)	SchoolDigger Rating (2026)	Average Standard Score (2025)	Statewide Rank (2025)	State Percentile (2025)	Rank Change from Previous Year	OSAS English Language Arts 3rd Grade	OSAS English Language Arts 4th Grade	OSAS English Language Arts 5th Grade	OSAS English Language Arts 6th Grade	OSAS English Language Arts 7th Grade	OSAS English Language Arts 8th Grade	OSAS English Language Arts 11th Grade	OSAS English Language Arts All Grades	OSAS Mathematics 3rd Grade	OSAS Mathematics 4th Grade	OSAS Mathematics 5th Grade	OSAS Mathematics 6th Grade	OSAS Mathematics 7th Grade	OSAS Mathematics 8th Grade	OSAS Mathematics 11th Grade	OSAS Mathematics All Grades	OSAS Science 5th Grade	OSAS Science 8th Grade	OSAS Science 11th Grade	OSAS Science All Grades	Vaccination: Students (K-12) with all required vaccines	Vaccination: Exemption rate	Per Pupil Expenditures Total	Sub-total from Federal Funds	Sub-total from State/Local Funds
Four Rivers Community School	Public, Charter, Alternative	K-12	2449 SW 4th Ave	Ontario	97914	Malheur County	Oregon Department of Education	Yes	(n/a)	No	Yes	(541) 889-3715	367	20	18.3	37.1%	56 (15.3%)	4 (1.1%)	303 (82.6%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	4 (1.1%)								(n/a)	43.5	34.8	46.2	41.4	59.3	48.3	65.4	48.6	47.8	21.7	38.5	13.8	29.6	20.7	26.9	27.9	25.9	27.6	34.6	29.3	95.3%	2.4%
Annex Charter School	Public, Charter	K-8	402 Annex Rd	Ontario	97914	Malheur County	Annex School District 29	Yes	(n/a)	No	Yes	(541) 262-3280	131	8	16.3	22.9%	99 (75.6%)	0 (0.0%)	29 (22.1%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	3 (2.3%)	52.1	310^th of 709 public elementary schools	56.3%		26.7	535^th of 706 public elementary schools	24.2%	225	64.3	30.8	40.0					48.9	50.0	21.4	40.0					41.3	40.0			36.4	84.1%	15.9%	$23,527	$1,548	$21,979
Alameda Intermediate School	Public	4-5	1252 Alameda Dr	Ontario	97914	Malheur County	Ontario School District 8C	No	(n/a)	No	Yes	(541) 889-5497	355	22	16.1	55.2%	102 (28.7%)	0 (0.0%)	233 (65.6%)	0 (0.0%)	2 (0.6%)	0 (0.0%)	18 (5.1%)	32.5	473^rd of 709 public elementary schools	33.3%		22.4	569^th of 706 public elementary schools	19.4%	96		42.5	37.3					39.9		31.4	24.2					27.7	19.0			19.0			$22,372	$2,308	$20,065
Aiken Elementary School	Public	2-3	1297 W Idaho Ave	Ontario	97914	Malheur County	Ontario School District 8C	No	(n/a)	No	Yes	(541) 889-5584	333	21	15.8	38.7%	92 (27.6%)	0 (0.0%)	226 (67.9%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	15 (4.5%)								(n/a)	13.8							13.8	24.5							24.5					97.1%	2.6%	$22,819	$2,690	$20,129
May Roberts Primary School	Public	K-1	590 NW 8th St	Ontario	97914	Malheur County	Ontario School District 8C	No	(n/a)	No	Yes	(541) 889-5379	302	21	14.3	95.0%	101 (33.4%)	0 (0.0%)	193 (63.9%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	8 (2.6%)								(n/a)																							$24,906	$2,528	$22,378
Ontario Middle School	Public	6-8	573 SW 2nd Ave	Ontario	97914	Malheur County	Ontario School District 8C	No	(n/a)	No	Yes	(541) 889-5377	471	31	15.1	35.0%	136 (28.9%)	1 (0.2%)	316 (67.1%)	1 (0.2%)	0 (0.0%)	0 (0.0%)	15 (3.2%)	34.4	242^nd of 371 public middle schools	34.8%		32.6	247^th of 368 public middle schools	32.9%	5				31.3	43.9	37.1		37.1				24.6	34.8	19.4		26.0		14.1		14.1	94.4%	3%	$22,895	$1,387	$21,508
Ontario High School	Public	9-12	1115 W Idaho Ave	Ontario	97914	Malheur County	Ontario School District 8C	No	(n/a)	No	No	(541) 889-5309	709	40	17.7	48.9%	194 (27.4%)	1 (0.1%)	482 (68.0%)	2 (0.3%)	1 (0.1%)	0 (0.0%)	29 (4.1%)	17.9	234^th of 271 public high schools	13.7%		25.4	208^th of 270 public high schools	23.0%	26							27.7	27.7							< 5%	< 5%			19.3	19.3	96.7%	2%	$22,143	$1,253	$20,890
EdFlexOregon	Public, Alternative	K-12	195 SW 3rd Ave	Ontario	97914	Malheur County	Ontario School District 8C	No	(n/a)	(n/a)	(n/a)	(541) 889-5374	0			—	0 ()	0 ()	0 ()	0 ()	0 ()	0 ()	0 ()								(n/a)

Cities Near Ontario

City	Distance	# of Schools	Statewide Rank
Nyssa	12.21 mi	4	45^th
Vale	13.85 mi	4	13^th
Adrian	21.89 mi	2	7^th
Huntington	24.62 mi	1
Harper	33.64 mi	1

See the top OR Oregon cities

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.