Summary:
Zip code 99588 serves the Glennallen, Alaska area and contains three small schools within the Copper River School District — Glennallen Elementary, Glennallen Junior/Senior High School, and Upstream Learning Correspondence — together enrolling roughly 327 students in grades PK–12 on a shared campus. The district itself is rated 4 stars and ranks 8th out of 23 Alaska districts, giving this rural community a solid overall foundation despite widely varying outcomes among its schools.
Each school offers a distinct profile. Glennallen Elementary is the most dependable conventional option, beating the state in all three subjects (44.44% ELA, 33.33% math, and 52.63% science proficiency) while also outpacing district averages in ELA and math, with a manageable 16.1 student–teacher ratio. Upstream Learning Correspondence posts the strongest ELA and science scores in the area (53.13% and 62.50%), but that academic success comes with red flags: a 46.1% graduation rate, weak math performance at 28.13%, and an extremely high 104.5 student–teacher ratio reflecting its mostly independent-learning model. Glennallen Junior/Senior High School shows the most dramatic improvement, jumping from a 1-star, bottom-fifth ranking to a 4-star, top-quarter ranking with a strong 78.9% graduation rate; however, it still trails district averages in all three tested subjects, including just 25% math proficiency.
Looking across the zip code, science is a clear regional strength — every school far exceeds the state average — while math is the most consistent weakness at the secondary level. The high-poverty elementary school reports 71.43% free/reduced lunch eligibility, and per-student spending varies widely, from $9,883 at the alternative school to $26,051 at the high school. For parents, the elementary school offers the most balanced traditional experience, the high school offers strong momentum and graduation outcomes, and the alternative school serves niche needs best suited to self-motivated students.
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