Summary:
Zip code 80643 contains exactly one middle school: Weld Central Middle School, serving grades 6–8 with 403 students in Keenesburg, Colorado, as part of Weld County School District Re-3j. The school serves a predominantly low-income population, with 58.31% of students qualifying for free/reduced lunch, and maintains a student-teacher ratio of 14.3. As the only middle school in the area, Weld Central is the sole representative for families in this zip code, making its performance particularly important to the local community.
Weld Central Middle School has shown dramatic improvement in recent years. The school's state ranking jumped from 416th (14th percentile, 1 star) in 2023–24 to 303rd (35th percentile, 2 stars) in 2025–26, moving up roughly 100 places. The most striking gain came in math proficiency, which surged by 14.5 percentage points — from 13.1% to 27.6% — nearly closing the gap with the district (29.0%) and significantly narrowing the gap with the state (37.3%). The school actually outperforms its district in every grade-level math category and in 6th and 7th grade ELA. However, 8th grade ELA is a clear weak spot at 21.5% proficiency, well below the district's 26.4% and the state's 42.2%.
Despite these improvements, significant challenges remain. Chronic absenteeism is a major concern, with 34.8% of students chronically absent — above the district's 29.1% and the state's 28.4%. Science proficiency is also low at 20.0%, trailing both the district (24.3%) and state (35.4%). The district itself is rated above average at the 58th percentile (48 out of 115 districts, 3 stars), meaning Weld Central is underperforming relative to its own district's standing. While the school's upward trajectory is encouraging — especially in math — sustained support for 8th grade literacy, science, and attendance will be essential to continue closing the gap with state averages.
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