Summary:
Mount Baker Senior High is the only high school in Mount Baker School District, serving grades 9–12 and 513 students in the rural community of Deming, Washington. Because there is only one high school, families do not have another district high school for comparison, so this school represents the district’s entire high-school program. Nearly half of students qualify for free or reduced-price lunch, and the student-teacher ratio is 23:1. Per-student spending was reported at $22,097 for 2023–2024.
The school’s strongest academic area is English Language Arts, where 69.23% of students were proficient in 2025–2026. That was well above the Washington rate of 52.81% and the district rate of 45.24%. Science was also a relative strength, with 52.53% proficiency, slightly above the state rate of 50.95%. Math remains the clearest academic challenge: 29.81% of students were proficient, below both the district rate of 30.73% and the state rate of 43.11%. There was encouraging progress in every tested subject compared with the prior year, including a nearly 10-point increase in math proficiency.
Recent overall momentum is positive. The school’s ranking improved from the 39th percentile in 2024–2025 to the 66th percentile in 2025–2026, and its rating rose from two stars to three. However, completion outcomes need attention: the graduation rate was 77.7%, compared with 82.6% statewide, while the dropout rate was 17.0%, considerably higher than the state’s 9.8%. Families may want to ask about math support, credit recovery, attendance monitoring, counseling, and programs that help students stay on track for graduation. Overall, the school offers notably strong ELA performance and improving science and math results, but math achievement and student persistence remain the most important areas for improvement.
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