Jefferson Junior/Senior High School

Jefferson Junior/Senior High School is one of the mid-sized high schools in EDGEWATER, Colorado, operated by Jefferson County School District No. R-1, with 601 students on its rolls from grades 7 through 12.

Jefferson County School District No. R-1 comprises 148 schools with combined enrollment of 74,935 students; Jefferson Junior/Senior High School is among them.

Demographically, Jefferson Junior/Senior High School records that 86% of students identify as Hispanic, making the school strongly Hispanic-majority. Other groups include 7% White, 3% Black, 3% multiracial. The wider county runs roughly 16% Hispanic, putting the school's mix considerably more Hispanic than the area baseline.

On the resource side, The school reports having 44 full-time-equivalent teachers, for a student-teacher ratio near 13.7:1. That figure is tighter than the state norm's 16.9:1 average. Roughly 79% of students at Jefferson Junior/Senior High School qualify for free or reduced-price lunch, often used as a Title I proxy. That share is noticeably above Jefferson County's rate of about 32%.

On a residual basis (actual vs predicted given the student mix), Jefferson Junior/Senior High School sits in the middle band of the BeatsExpectations distribution. Schools with this campus's student mix typically land near 19.0%; this one delivers 8.2%.

Across the wider county, Jefferson County reports that median household income runs about $110,656, roughly 52% of adults have completed at least a four-year degree, and roughly 4% of residents live below the federal poverty line. In all, Jefferson County runs 168 public schools (combined enrollment of about 74,739 students), of which Jefferson Junior/Senior High School is one.

Nearest neighbor: Lumberg Elementary School, around 0.1 miles off. Counting just inside five miles, 8 other public schools cluster around Jefferson Junior/Senior High School. On composite proficiency, Jefferson Junior/Senior High School comes 6th of 7 in the immediate cluster, behind the nearby-schools average of 21.8%.

Jefferson Junior/Senior High School operates from a suburban location.

Five-year trend. Over the past 7-year window, the student count ticked down 11%: 676 students in 2018 compared to 601 in 2025. Over the same period, the Hispanic share ticked up from 80% to 86%.

On allk12, members of the Jefferson Junior/Senior High School community share and discuss school events, parent volunteer needs, and clubs. Members of the school community can share what they know.