School Overview
Union Mine High School, located in the foothills of El Dorado, California, serves as a prominent educational institution within the El Dorado Union High School District. Known for its distinct "Diamondback" mascot and spirited campus culture, the school provides a comprehensive academic program that balances rigorous college-preparatory coursework with a variety of Career Technical Education (CTE) pathways. The campus is situated in a semi-rural setting, fostering a tight-knit community atmosphere where staff and students focus on developing both academic excellence and personal character.

Beyond the classroom, Union Mine High emphasizes a well-rounded student experience through a robust selection of extracurricular activities, including competitive CIF sports, performing arts, and numerous student-led clubs. The school is particularly noted for its commitment to preparing students for life after graduation, whether through university pathways, vocational training, or direct entry into the workforce. By prioritizing student engagement and community involvement, Union Mine continues to be a central pillar of the El Dorado community, dedicated to empowering its diverse student body.
1,066
Total Students
47.8
Full-Time Teachers
22.3
Student/Teacher Ratio
36.1%
Free/Reduced Lunch
Student Demographics

Student Demographics Data Table

Student Demographics for Union Mine High
Demographic Student Count
White719
Hispanic250
Black9
Asian12
Two or More56
American Indian17
  • White
    719 (67.6 %)
  • Hispanic
    250 (23.5 %)
  • Two or More
    56 (5.3 %)
  • American Indian
    17 (1.6 %)
  • Asian
    12 (1.1 %)
  • Black
    9 (0.8 %)
School Location
School Details
Status: Open
School Level: High School
School Type: Regular School
Charter Status:* Public Non-Charter
Virtual Instruction: No virtual instruction
Shared Time Status: N/A
District: El Dorado Union High
Phone: (530)621-4003
Website: http://umhs.eduhsd.k12.ca.us/
Grade Range: 9th - 12th
Total Students: 1,066
Full-Time Teachers (FTE): 47.8
Pupil/Teacher Ratio: 22.3
NSLP Participation:1 Yes participating without using any Provision or the CEO
Qualified Free Lunch: 379
Qualified Reduced Lunch: 6
Grades Taught
Grade 9 264
Grade 10 267
Grade 11 287
Grade 12 248

Grades Taught Data Table

Grades Taught and Student Counts for Union Mine High
Grade Student Count
Grade 9264
Grade 10267
Grade 11287
Grade 12248
Gender Ratio

Student Gender Ratio Data Table

Student Gender Ratio for Union Mine High
Gender Student Count Percentage
Female51848.6%
Male54551.1%
Not Specified30.3%