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Thermalito Union Elementary

At a glance

1123^rdof 1,543 California districts▲ 135

Better than 27% of California districts

Elementary 4 Middle 2Grades K-8

400 Grand Ave.
Oroville, CA 95965-4007·(530) 538-2900·All California district rankings →

Statewide performance 2017–2025

2025: better than 27.2% of districts

Schools

1,515

Students

Top rankedPlumas Avenue Elementary3306^th of 5,857 California elementary schools

▲

Biggest riser

Poplar Avenue Elementary up 766 spots statewide this year

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Smallest classes

Nelson Avenue Middle 19.4 students per teacher

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Summary:

The Thermalito Union Elementary district in Oroville, California, consists of five schools serving grades K-8, where all schools serve a student population with high economic need.

Among the schools, Plumas Avenue Elementary stands out as the top performer with the highest test scores in English and science and the district's lowest chronic absenteeism rate at 9.4%. Nelson Avenue Middle is also notable as the most improved, showing consistent gains in its statewide ranking. In contrast, Sierra Avenue Elementary faces significant challenges, with the lowest test scores and the highest chronic absenteeism among the comprehensive elementary schools.

Overall, the Thermalito Union Elementary district spends more per student than the national average, but academic proficiency lags behind California state averages, particularly in mathematics. A clear pattern links better attendance with stronger academic performance. The specialized Siskiyou Avenue Elementary, which serves only kindergarten, has a very high absenteeism rate but the smallest class sizes, while Poplar Avenue Elementary maintains the lowest absenteeism in the district.

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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 Immunizations Finance All

School													Students/Teachers											Ranking (2025)				Ranking (2024)				CAST Science (2025)			Smarter Balanced Assessments English Language Arts/Literacy (2025)							Smarter Balanced Assessments Mathematics (2025)							% Completely Immunized (2022)	% Polio (2022)	% DTP (2022)	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	Free/Discounted Lunch Recipients	White	Black	Hispanic	Asian	American Indian	Pacific Islander	Two or More Races	Average Standard Score (2025)	Statewide Rank (2025)	State Percentile (2025)	SchoolDigger Rating (2025)	Average Standard Score (2024)	Statewide Rank (2024)	State Percentile (2024)	Rank Change from Previous Year	CAST Science 5th Grade	CAST Science 8th Grade	CAST Science All Grades	Smarter Balanced Assessments English Language Arts/Literacy 3rd Grade	Smarter Balanced Assessments English Language Arts/Literacy 4th Grade	Smarter Balanced Assessments English Language Arts/Literacy 5th Grade	Smarter Balanced Assessments English Language Arts/Literacy 6th Grade	Smarter Balanced Assessments English Language Arts/Literacy 7th Grade	Smarter Balanced Assessments English Language Arts/Literacy 8th Grade	Smarter Balanced Assessments English Language Arts/Literacy All Grades	Smarter Balanced Assessments Mathematics 3rd Grade	Smarter Balanced Assessments Mathematics 4th Grade	Smarter Balanced Assessments Mathematics 5th Grade	Smarter Balanced Assessments Mathematics 6th Grade	Smarter Balanced Assessments Mathematics 7th Grade	Smarter Balanced Assessments Mathematics 8th Grade	Smarter Balanced Assessments Mathematics All Grades	% Completely Immunized KG	% Polio KG	% DTP KG	Per Pupil Expenditures Total	Sub-total from Federal Funds	Sub-total from State/Local Funds
Nelson Avenue Middle	Public	6-8	2255 Sixth St.	Oroville	95965	Butte County	Thermalito Union Elementary	No	(n/a)	No	(n/a)	(530) 538-2940	456	23	19.4	85.7%	162 (35.5%)	8 (1.8%)	71 (15.6%)	162 (35.5%)	10 (2.2%)	2 (0.4%)	41 (9.0%)	35.8	1625^th of 2761 public middle schools	41.1%		33.5	1691^st of 2783 public middle schools	39.2%	66		28.9	28.9				33.3	44.3	39.9	39.0				17.6	25.2	28.2	23.3				$23,855	$23,578	$277
Poplar Avenue Elementary	Public	K-5	2075 Poplar Ave.	Oroville	95965	Butte County	Thermalito Union Elementary	No	(n/a)	No	(n/a)	(530) 538-2910	321	15	21.3	84.4%	88 (27.4%)	3 (0.9%)	41 (12.8%)	160 (49.8%)	3 (0.9%)	1 (0.3%)	25 (7.8%)	29	4041^st of 5857 public elementary schools	31.0%		20.5	4807^th of 5869 public elementary schools	18.1%	766	25.0		25.0	31.9	18.6	41.7				29.9	34.0	17.0	37.5				28.6				$20,742	$19,886	$856
Sierra Avenue Elementary	Public	K-5	1050 Sierra Ave.	Oroville	95965	Butte County	Thermalito Union Elementary	No	(n/a)	No	(n/a)	(530) 538-2920	365	17	21.4	90.4%	140 (38.4%)	7 (1.9%)	76 (20.8%)	85 (23.3%)	8 (2.2%)	2 (0.5%)	47 (12.9%)	18.8	4931^st of 5857 public elementary schools	15.8%		18.7	4965^th of 5869 public elementary schools	15.4%	34	18.0		18.0	25.0	26.2	26.2				25.8	28.1	23.0	13.1				21.5	97.4		97.4	$27,262	$26,328	$934
Heritage Community Day	Public	4-8	2255 Sixth St.	Oroville	95965	Butte County	Thermalito Union Elementary	No	(n/a)	No	(n/a)	(530) 538-4376	5	1	4.9		4 (80.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	1 (20.0%)								(n/a)
Plumas Avenue Elementary	Public	K-5	440 Plumas Ave.	Oroville	95965	Butte County	Thermalito Union Elementary	No	(n/a)	No	(n/a)	(530) 538-2930	322	13	24.7	87.0%	119 (37.0%)	8 (2.5%)	59 (18.3%)	99 (30.7%)	5 (1.6%)	4 (1.2%)	28 (8.7%)	38.6	3306^th of 5857 public elementary schools	43.6%		28.5	4067^th of 5869 public elementary schools	30.7%	761	33.9		33.9	28.3	50.0	39.3				39.1	15.1	50.0	21.4				28.6	93.3	97.3	94.7	$22,583	$21,566	$1,017
Siskiyou Avenue Elementary	Public	K	2075 Poplar St.	Oroville	95965	Butte County	Thermalito Union Elementary	No	(n/a)	No	(n/a)	(530) 538-2910	46	3	15.3	93.5%	20 (43.5%)	1 (2.2%)	11 (23.9%)	9 (19.6%)	1 (2.2%)	0 (0.0%)	4 (8.7%)								(n/a)																					$21,032	$17,158	$3,874

Districts nearby

District	Distance	# of Schools	Statewide Rank
Butte County Office of Education	0.06 mi	11
Oroville Union High	0.61 mi	4	1095^th
Ipakanni Early College Charter District	1.65 mi	1
Feather Falls Union Elementary	1.65 mi	1
STREAM Charter District	2 mi	1	917^th

See the top CA California districts

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