The top reported proficiency rate is 9% in English language arts. The lowest is 5% in Math.
Original Research by School Decision on Lumberg Elementary School
Lumberg Elementary School serves students from preschool through sixth grade in Edgewater, a small city within Jefferson County just west of Denver. It is a regular public school in the Jefferson County School District No. R-1, the large suburban and exurban system that covers much of the western Denver metro area. The school enrolls a student body that is predominantly Hispanic, with smaller shares of white, Black, and multiracial students. A substantial share of students come from low-income households, as measured by eligibility for free and reduced-price lunch. The school is not a charter or magnet.
State assessment results for the most recent year show that in math and English language arts, tested in grades three through six, a small fraction of students met the state’s proficiency benchmarks. The proficiency rate in math was in the single digits, and in ELA it was also very low, though slightly above math. Participation rates were high, meaning nearly all enrolled students took the tests. Science results for fifth grade were suppressed for privacy reasons, which the state does when the number of students scoring at a given level is very small. For parents considering the school, the test score picture is clear: typical student performance is well below the state average, and a family may want to ask the school directly about academic supports, intervention strategies, and how the school is working to raise achievement.
No data was available on discipline, staffing ratios, or chronic absenteeism, so those dimensions of the school environment cannot be assessed here. Similarly, information on the share of students receiving special education services or identified as English learners was not reported in the data we reviewed, though the overall demographic profile suggests the school serves a diverse population with varying needs.
The school belongs to the Jefferson County School District No. R-1, which has been in a period of significant change. Voters in the district approved a bond measure in 2024 for capital improvements, safety upgrades, and technology, the first bond passed by Jeffco voters in over a decade. That same year, three school board members were recalled and replaced in an election driven by concerns about transparency and the handling of school consolidation plans. The district had previously announced a plan to close a number of schools in 2023, then reversed it after community backlash, and formed a regional consolidation committee to study enrollment trends and capacity. This ongoing process means families across Jeffco, including those zoned for Lumberg, face continued uncertainty about potential school closures and boundary adjustments. On the curriculum side, the district adopted a new elementary literacy program, “Into Reading,” starting in the 2023-24 school year, aligning with Colorado’s READ Act and the science of reading framework. That change represents a lasting shift in how early reading is taught across all district elementary schools.
Edgewater itself is a dense, older suburb along the Sloans Lake corridor, with a mix of single-family homes and apartments. Housing values in the area are roughly in line with the state average, and rents follow a similar pattern. For a family considering Lumberg, the neighborhood offers proximity to Denver and the amenities of central Jefferson County, but the school’s academic results are clearly a concern. Parents interested in this school should come ready to ask about interventions for students who are below grade level, enrichment opportunities, and how the school plans to raise performance. The district context adds another layer: Jeffco is in the middle of politically charged decisions about school closures and governance, so any family commitment to a particular attendance area comes with the possibility of future reassignment or school closure.
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