Summary:
Zip code 81403 contains exactly one school—Oak Grove Elementary School, a public elementary school serving grades K–5 in Montrose, CO. The school belongs to the Montrose County School District Re-1J, which ranks in the middle of Colorado districts at the 43rd percentile (65th out of 115 districts). With no middle schools or high schools located within the zip code, families in 81403 must look outside the immediate area for secondary education options.
As the only school in the zip code, Oak Grove Elementary stands out as the single elementary option for families. It outperforms its district in nearly every reported subject and grade level. The school serves 374 students with a student-teacher ratio of 16.2, and about 41% of students receive free or reduced-price lunch. Chronic absenteeism is notably low at 17.1%, compared to the district rate of 31.7% and the state rate of 28.4%. In the 2025–2026 school year, Oak Grove earned 2 stars and ranked 512th out of 943 Colorado schools (46th percentile), an improvement from 548th the prior year. ELA proficiency across all grades reached 43.6%, nearly matching the state average of 44.7%, while all-grades math proficiency was 30.5%, below the state's 37.3%.
The school shows a clear positive trend in ELA: proficiency climbs from 31% in 3rd grade to 47.1% in 4th grade and 54% in 5th grade—the latter exceeding both the district (43.7%) and state (49.9%). Math, however, is a concern, with 5th-grade math (27%) falling below the district (29.8%) and well below the state (39.3%). Science proficiency dropped sharply from 50% in 2024–2025 to 37.1% in 2025–2026, though it remains slightly above the state average. Overall, Oak Grove is a solid mid-tier school with strong attendance and upward literacy growth, but math proficiency and the recent science decline deserve close attention.
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