Summerville Union High, CA

Original Research by School Decision on Summerville Union High

Summerville Union High School District serves a small enrollment across six high school campuses in the Sierra foothills of Tuolumne County, California. The district's grades run from seventh through twelfth, reflecting a configuration in which middle grades and high school operate together within its school sites. The student body is predominantly white, with a notable Hispanic enrollment and smaller representation from other racial and ethnic groups. Free-and-reduced-price lunch data and English learner counts were not available for this district.

On state assessments, the district shows strength in English language arts but faces meaningful challenges in math and science. In seventh-grade ELA, students showed strong proficiency. Eighth-grade ELA proficiency also performed well, while seventh-grade math proficiency was solid. However, eighth-grade math proficiency dropped notably, and district-wide science proficiency was below the midpoint on the state assessment. Across all tested subjects and grades combined, the district's overall proficiency index places it in the top quartile among Tuolumne County's districts, a genuine strength relative to its peers in the county.

A graduation rate was not reported for the district, which may reflect incomplete data collection or reporting practices. State testing data for high school grades (nine through twelve) was not provided in the available record, so the picture of upper-grade academic performance is incomplete. The district does serve these grades at scale—the high school enrollment bands hold the largest populations—but their assessment results are not shown here.

Housing in the communities served by the district, which include Groveland, Twain Harte, Tuolumne, and smaller foothill towns, ranges across a set of zip codes with median home values generally in the mid-range for the state, though with modest year-over-year declines. Properties in the district's service area are affordable compared to California benchmarks. Mortgage affordability has been a recent factor, though local property taxes would increase modestly if the district pursues a new facilities bond measure in 2026.

The district operates six distinct high schools rather than one consolidated campus: Summerville High, Long Barn High, South Fork High, Cold Springs High, Mountain High, and Connections Visual and Performing Arts Academy. This structure creates different school environments and program choices across the district. In 2024, voters defeated a school facilities bond intended to replace decades-old portable classrooms and modernize core facilities. The district is now planning a 2026 bond measure to address the aging wing of one school, add security and lighting infrastructure, and update technology systems. Families moving into this district should anticipate a facilities levy decision in the near term.

A notable recent development is the district's adoption of Blue Zones Approved status across all six school sites in 2025, reflecting a commitment to well-being infrastructure and pedagogy. The district has integrated purpose and wellness workshops into senior seminar, redesigned cafeteria spaces for connection, and launched greenhouse and garden programs at its schools. This represents a values-based pedagogical orientation embedded in school design and daily life.

Chronic absenteeism in the district stands above the county median, suggesting attendance patterns a parent may want to explore further with individual schools. Per-pupil spending sits in the middle-to-upper range among the county's districts, reflecting a resource position that is neither particularly lean nor exceptionally high.

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District Context

Officially reported figures, 2024-25.

Enrollment

640

Grades

KG–12

Schools

Student body

Hispanic 22%

Black 0%

White 65%

Asian 1%

Two+ 10%

Am. Indian / AK Native 1%

By economic status

Percent proficient by grade, as reported

Economically disadvantaged

Not disadvantaged

ELA

Gr ALL

61%

—

Gr 8

—

83%

Gr 11

60%

—

Math

Gr ALL

27%

—

Gr 8

—

50%

Gr 11

25%

—

Science

Gr ALL

34%

—

Gr 8

—

58%

Gr 11

20%

—

Gr HS

19%

—

Gr UG_SEC

19%

—

Schools in this District

6 schools are officially reported under this district.

Connections Visual and Performing Arts Academy

Academic Performance

Percent of students meeting or exceeding state standards, by grade.

Mathematics

2 grades reported

73%

Grade 7

46%

Grade 8

English Language Arts

2 grades reported

82%

Grade 7

85%

Grade 8

Science

1 grade reported

54%

Grade 8

Social Studies

1 grade reported

67%

Grade 8

Housing & Real Estate

Data as of April 2026 | District-weighted from constituent ZIP codes

Home Values

Typical home value$388,773

Year-over-year change-4.4%

Range across 10 ZIP codes$318K to $425K

vs. state typical0.50x

vs. national typical1.06x

Home value trend (12 months)

ZIP code home values (10 ZIP codes)

ZIP	City	Value	YoY	Weight
95321	Groveland	$398K	-4.9%	44.4%
95383	Twain Harte	$403K	-3.1%	10.1%
95335		$318K	-6.2%	6.3%
95379	Tuolumne	$347K	-2.9%	4.0%
95375	Pinecrest	$415K	+1.9%	2.1%
95223	Avery	$425K	-6.2%	1.2%
95346	Mi Wuk Village	$344K	-3.0%	0.8%
95310	Columbia	$394K	-2.7%	0.7%
95370	Sonora	$408K	-3.3%	0.3%
95372	Soulsbyville	$393K	-0.8%	0.0%

Affordability

Est. monthly mortgage (20% down at 6.48%)$1,962/mo

Home price / national median income4.6x

Comparison

State typical home value$776,233 (-1.1% YoY)

National typical home value$368,198 (+0.6% YoY)

State ZHVI trend (12 months)

National ZHVI trend (12 months)

Economic Context

30-year fixed mortgage rate6.48%

National unemployment rate4.3%

National median household income$83,730

CPI: Rent of shelter (index)447.05

30-year fixed mortgage rate (12 months)

National unemployment rate (12 months)

National median household income (12 months)

CPI: Rent of shelter (index) (12 months)

Sources: Zillow Home Value Index and Zillow Observed Rent Index (Zillow Group), Realtor.com via Federal Reserve Bank of St. Louis (FRED)

Data Currently Unavailable

Civil Rights Data (CRDC)

This profile is derived exclusively from publicly available federal and state datasets. It may not reflect the most current information available. We encourage parents and families to supplement this data with information published directly on the school’s website, which may include more recent figures, additional programs, or updated enrollment data.