Summary:
Zip code 95640 has one listed elementary school, Ione Elementary, serving grades K–6 with 564 students in Amador County Unified. In 2025–2026, its proficiency was below state averages in all three subjects: 23% versus 49% in ELA, 20% versus 38% in math, and 24% versus 36% in science. The most important finding is that ELA had the largest state gap, at 26 percentage points.
Because it is the only school listed, Ione Elementary is technically both the highest- and lowest-scoring school, with no local peer comparison available. Science is its strongest subject relative to the state: the gap was 12 points, compared with 19 points in math and 26 in ELA. The clearest grade-level concern is third-grade ELA, where 11% were proficient versus 44% statewide, a 33-point gap. ELA results were higher in fourth and fifth grade, reaching 29% in fifth grade; math followed a different pattern, falling to 15% in fifth grade.
Results moved further below state averages from 2024–2025 to 2025–2026: Ione’s proficiency fell by 7 points in ELA, 3 in math, and 7 in science, while state results rose in each subject. The gaps widened by 7 points in ELA, 4 in math, and 10 in science. SchoolDigger gave the school one star and a 14th-percentile ranking in 2025–2026, down 10 percentile points from the prior year. Other context includes a 25:1 student-teacher ratio in 2024–2025, and 34% of students reported as free/reduced lunch eligible that year; California is a statewide-free-meals state, so this is the school’s reported eligibility figure, not a claim that only eligible students receive free meals. Chronic absenteeism was 23%, compared with 21% for the district and 18% statewide.
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