Summary:
Elementary schools in ZIP code 55812 consist of a single campus: Congdon Elementary, a PK–5 school in Duluth, Minnesota serving 474 students as part of the Duluth Public School District. Because it is the only elementary school in this ZIP code, there is no local peer to compare it against, so the meaningful comparisons are to its district and to the state.
On 2025–2026 proficiency tests, Congdon outperformed both benchmarks in every subject. Math came in at 65.5%, about 20.6 points above both the district and state, which each scored 44.9%. Reading was 64.0%, 9.3 points above the district and 15.4 points above the state. Science was 46.7%, 13.1 points above the district and 21.2 points above the state — the school's largest relative advantage and roughly 1.8 times the state science rate. Grade-level results vary: 4th grade math (79.2%) and 5th grade reading (74.4%) are the strongest, 3rd grade math is 70.7%, and 4th grade reading is 67.1%. The slimmest margins are 3rd grade reading (49.4%) and 5th grade math (48.9%), though both still exceed district and state figures.
Two trends are worth watching. Congdon's state rank slipped from 46th of 881 (95th percentile, 5 stars) in 2023–2024 to 95th of 872 (89th percentile, 4 stars) in 2024–2025 and 124th of 869 (86th percentile, 4 stars) in 2025–2026 — still well above the district's 63rd percentile. All-grade reading also fell 9.86 points year over year (73.86% to 64.0%), though the two years carry different assessment labels (MCA-III vs. MCA-IV), so that drop should be read with caution. For context, the school reports a 20.68% free/reduced-lunch rate and a 16.6:1 student–teacher ratio.
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