Union Mine High

Located at 6530 Koki Ln., in El Dorado, California, Union Mine High is an average-sized 9-12 campus that instructs 1,033 students (grades 9 through 12), overseen by El Dorado Union High. That puts it 23% larger than the typical public school in California, which averages around 838 students.

Within El Dorado Union High, which oversees 6 schools and 6,410 students, Union Mine High is one campus in the system.

Demographically, Union Mine High shows that the largest single group is White, at 66% of enrollment. The remainder reads as 25% Hispanic, 6% multiracial. That is considerably less White than the county at large, where the share is closer to 78%.

Looking at school resources, The school reports having 49 full-time-equivalent teachers, for a student-teacher ratio near 21.1:1. That figure is higher than the state norm's 18.2:1 average. About 37% of enrolled students meet the income threshold for free or reduced-price lunch, often used as a Title I proxy.

On a demographically-adjusted basis, Union Mine High sits in the middle band of the BeatsExpectations distribution. Schools with this campus's student mix typically land near 57.3%; this one delivers 45.6%.

Zooming out to the county, community-level numbers for El Dorado County indicate median household income runs about $108,845, roughly 40% of adults have completed at least a four-year degree, and roughly 5% of residents live below the federal poverty line. Union Mine High is one of 69 public schools in El Dorado County (combined enrollment of about 34,706 students).

Pacific Crest Academy is the nearest neighboring public school, about 0.2 miles from this campus. 8 of the 8 nearest public schools sit inside a five-mile radius. Ranking that nearby cluster on reported proficiency puts Union Mine High at 1st of 4; the average score across the group is 30.7%.

Union Mine High operates from a small-town location.

Over the past 7-year window. Over the past 7-year window, the student count changed only slightly: 1,033 students in 2018 compared to 1,033 in 2025. Class-load math has pulled in: from 22.2:1 in 2018 to 21.1:1 in 2025.

On allk12, recent activity here tends to focus on sports schedules, lunch menu changes, and school spirit week. Contributors range from current parents to recent graduates and teachers.