Summary:
Portales Municipal Schools operates a single high school, Portales High, which serves grades 9–12 and enrolls 754 students in Portales, New Mexico. Because it is the only high school in the district, the district's high-school results are identical to the school's results—for graduation rate and every reported test score. Nearly the entire student body comes from economically disadvantaged backgrounds, with 99.73% of students eligible for free or reduced lunch, and the reported student-teacher ratio is 15.5:1.
The clearest strength is getting students to graduation. Portales High's 2024–2025 graduation rate is 91.9%, which is 11.3 percentage points above New Mexico's 80.6%. Mathematics also shows the most encouraging movement in the data: SAT math proficiency rose from 6.79% in 2024–2025—roughly 56% of the state rate of 12.22%—to 10.56% in 2025–2026, a 3.77 percentage-point gain, though it remains below the state's 12.72%. Science, by contrast, is the sharpest concern: NM-ASR proficiency dropped from 36.02% in 2024–2025 to 23.89% in 2025–2026, while the state fell from 41.69% to 34.27%, widening the gap from 5.67 points to 10.38 points.
Across all reported subjects and years, Portales High's 11th-grade test scores fall below state averages. Language arts sits in the low 30s—30.9% on the SAT School Day exam in 2025–2026—against the state's 37.07%, and ELA has consistently trailed the state by about 5 to 6 percentage points. The school is rated 2 stars and ranks around the 31st percentile of New Mexico high schools, down from the 51st percentile and 3 stars in 2023–2024. For parents, the picture is mixed: strong graduation outcomes and a nearly universally economically disadvantaged population, paired with below-state proficiency and a recent slide into the bottom third of state rankings.
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