Summary:
ZIP code 89040 covers Overton, in Nevada's Moapa Valley, and it contains just one middle school: Lyon Mack Middle School, which serves grades 6 through 8 with 401 students and belongs to the Clark County district. Because there is only one school here, there are no local peers to compare it against — the useful benchmarks are the district and the state of Nevada.
Lyon Mack is a consistently strong school. It earned 4 stars in each of the last three years and ranked 33rd of 148 Nevada middle schools in 2025-26, placing it in the top quartile (78th percentile). In 2025-26, 52.7% of students met math standards, 53.7% met reading standards, and 45.8% met science standards — above both the district (33.8%, 43.3%, 23.5%) and the state (36.2%, 45.2%, 25.5%). Science is the standout: the school's rate is nearly 1.8 times the state's. Notably, 100% of students qualify for free or reduced-price lunch, yet performance remains above average, and chronic absenteeism (24.2%) is lower than both the district (27.0%) and the state (25.5%).
There are a few watch items. Reading fell from 58.2% to 53.7% year over year while the district and state stayed roughly flat, and math dipped slightly (54.4% to 52.7%). Seventh-grade math (47.1%) is the weakest grade-level result, while sixth-grade math (58.9%) is the strongest. The school's statewide rank has drifted from the 83rd percentile in 2023-24 to the 78th in 2025-26, though it has never left the top quartile. Attendance, lunch, spending, and class-size figures each cover only one year, so no trends can be drawn from them.
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