Summary:
ZIP code 88130 in Portales, New Mexico is home to two middle-level schools serving grades 5–8 — Lindsey-Steiner Elementary (grades 5–6, 376 students) and Portales Junior High (grades 7–8, 326 students) — both part of Portales Municipal Schools, a district rated 61st of 87 in New Mexico at the 30th percentile with 2 stars. Together the two schools enroll 702 students, and both serve a high-need population: free/reduced lunch rates are effectively universal at 99.73% and 99.69%. Because the schools cover different grade spans, the fairest comparisons are each school against its state grade-level averages rather than directly against each other.
Lindsey-Steiner Elementary is the stronger performer overall. Its all-grade math proficiency is 35.58% versus the state's 27.85%, and its grade 5 results beat the state in all three subjects: ELA at 47.62% vs 42.26%, math at 35.71% vs 33.97%, and science at 39.88% vs 32.24% — a striking jump from 27.27% the prior year. The clear weak spot is grade 6 ELA, at 31.01% vs the state's 39.14%. Year over year, math rose about 5.3 points while ELA fell about 3.9. Its latest available rank was 3 stars and the 60th percentile in 2023–2024, with a student-teacher ratio of 13.4.
Portales Junior High trails the state in both ELA (39.14% vs 44.66%) and math (19.57% vs 27.85%) at the all-grade level, and its rank has slid from the 67th percentile and 3 stars in 2023–2024 to the 42nd percentile and 2 stars in 2025–2026. Its math weakness is concentrated in grade 7 (18.60% vs 27.10%), while grade 8 math is essentially at state (20.65% vs 20.50%) and grade 8 science exceeds it (36.77% vs 34.33%). Notably, its student-teacher ratio of 9.0 is lower than Lindsey-Steiner's, yet proficiency is lower — ratio alone doesn't explain outcomes. Across the ZIP code, ELA is the shared challenge and science the shared bright spot.
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