Total enrollment
4,732
+1,357 (+40%) vs SY 2020-21
Colusa County
California · Public K-12
The schools list below covers the full public K-12 directory for Colusa County: 23 schools, 4,732 students, Colusa Unified as the largest district. By level, that breaks down as 6 elementary, 5 middle, and 10 high schools.
4-year change in Colusa County
SY 2020-21 vs SY 2024-25School count
21
+5 (+31%) vs SY 2020-21
Source: NCES Common Core of Data, enrollment-weighted demographic averages
How Colusa County ranks
Among counties| Measure | This county | In California | In the US |
|---|---|---|---|
| State test proficiency ranked highest first | 30.2% | #49 of 55 | N/A |
| Enrollment ranked largest first | 4,732 | #47 of 55 | #1,389 of 2,745 |
| Number of schools ranked most first | 21 | #47 of 55 | N/A |
| Students per teacher ranked fewest first | 19.2:1 | #11 of 55 | #2,533 of 2,655 |
| Free or reduced-price lunch share ranked highest first | 78.2% | #3 of 55 | #524 of 2,526 |
| Diversity index ranked most diverse first | 33.1% | #53 of 55 | #1,703 of 2,707 |
Counties need at least 3 schools and 1,000 students to be ranked. Test proficiency is ranked within the state only, since each state gives a different test. Each rank links to the full list.
Colusa County school rankings
Residents
21,984
all ages · ACS 5-yr
Schools
23
7 districts
Enrollment
4,732
students · NCES CCD
Median income
$75,672
Below California avg
Free/reduced lunch
78.2%
Above California avg
Elementary
6
1,697 students
Middle
5
1,253 students
High
10
1,741 students
Combined / other
2
41 students
LARGEST DISTRICT
Colusa Unified
1,470 students · 7 districts in Colusa County
County vs. school enrollment demographics
Left bar is the racial makeup of Colusa County residents (Census ACS 5-year). Right bar is the enrollment-weighted makeup of public schools in the county (NCES CCD). NCES systematically under-reports Hispanic, Pacific Islander, and Native American enrollment for many schools; where the resident share is meaningful but the reported school share is zero, we mark the school bar "not reported".
County residents
School enrollment
Bachelor's+
16.4%
adults 25+
Poverty rate
9.6%
ACS 5-year
Unemployment
9.8%
civilian labor
Median age
36
26.9% under 18
Test scores in Colusa County
Latest 2024-25 ELA proficiency, 13 schools ranked. California state average: 49.4%.
Top 5 schools (ELA)
- Pierce High· 63.9%
- Colusa High· 55.1%
- Maxwell Elementary· 46.4%
- Lloyd G. Johnson Junior High· 41.0%
- Williams Junior/Senior High· 37.1%
Lowest 5 schools (ELA)
- Williams Upper Elementary· 25.0%
- Maxwell Middle· 27.7%
- Princeton Elementary· 29.8%
- George T. Egling Middle· 30.4%
- Williams Primary Elementary· 30.4%
| Name | City | Level | Grades | Enrollment | Rating |
|---|---|---|---|---|---|
| Arbuckle Elementary | Arbuckle | Elementary | KG-05 | 604 | · |
| Williams Junior/Senior High | Williams | High | 07-12 | 588 | · |
| George T. Egling Middle | Colusa | Middle | 04-08 | 553 | · |
| Pierce High | Arbuckle | High | 09-12 | 463 | · |
| Colusa High | Colusa | High | 09-12 | 431 | · |
| James M. Burchfield Primary | Colusa | Elementary | KG-03 | 430 | · |
| Williams Primary Elementary | Williams | Elementary | KG-03 | 407 | · |
| Lloyd G. Johnson Junior High | Arbuckle | Middle | 06-08 | 321 | · |
| Williams Upper Elementary | Williams | Middle | 04-06 | 289 | · |
| Maxwell Elementary | Maxwell | Elementary | KG-05 | 124 | · |
| Maxwell Sr High | Maxwell | High | 09-12 | 117 | · |
| Maxwell Middle | Maxwell | Middle | 06-08 | 90 | · |
| Princeton Elementary | Princeton | Elementary | KG-08 | 83 | · |
| Grand Island Elementary | Grimes | Elementary | KG-06 | 49 | · |
| Princeton High | Princeton | High | 09-12 | 43 | · |
| S. William Abel Academy | Williams | High | 07-12 | 43 | · |
| Colusa Alternative Home | Colusa | Combined | KG-12 | 29 | · |
| Colusa Alternative High (Continuation) | Colusa | High | 09-12 | 27 | · |
| Mid Valley High (Continuation) | Williams | High | 10-12 | 19 | · |
| Coastal Buttes Academy | Williams | Combined | KG-12 | 12 | · |
| Arbuckle Alternative High (Continuation) | Arbuckle | High | 09-12 | 10 | · |
| Indian Valley Intermediate | Stonyford | Middle | 05-08 | 0 | · |
| Princeton Landing High | Princeton | High | 10-12 | 0 | · |
Cities in Colusa County
About Colusa County
Across the rural-scale California county of Colusa County of about 21,984 residents, the public-school footprint covers 23 schools and about 4,732 students.
Looking at the broader picture, census numbers show typical household earnings sit around $75,672, roughly 16% of adults have completed at least a four-year degree, and the poverty rate is around 10%. That income level is 15% lower than the California median.
On the level-by-level breakdown, Colusa County covers 6 elementary schools (1,697 students), 5 middle schools (1,253), 10 high schools (1,741), and 2 combined or other schools.
Colusa Unified is the biggest district by enrollment, covering about 1,470 students across Colusa County.
Five-year track record. Total public-school enrollment in Colusa County has rose 40% since SY 2020-21, moving from about 3,375 students to 4,732. Over that span, Colusa County gained 5 schools, going from 16 to 21.
On allk12, the community for Colusa County discusses comparison threads between local schools and program reviews. Parents, students, and educators in the area can post or comment.
Frequently asked questions
DATA · Census ACS 5-year · NCES Common Core of Data