Summary:
ZIP code 98611 has one middle school, Castle Rock Middle School, serving grades 6–8 in the small community of Castle Rock, Washington. The school enrolls 316 students and is part of the Castle Rock School District, so there are no other middle schools in the ZIP code for direct comparison.
Castle Rock Middle School performed below both district and Washington averages in 2025–2026. Proficiency was 33.94% in English language arts, 22.51% in math, and 41.38% in science. Math is the clearest academic concern, especially in eighth grade, where only 16.09% of students were proficient; eighth-grade English language arts was also relatively low at 30.68%. Science was the strongest subject and came closest to the state benchmark. The school serves a community with notable economic needs, with 55.7% of students qualifying for free or reduced-price lunch. Its student-teacher ratio was 17.5 to 1, and reported spending was $15,389 per student.
There are also encouraging signs of progress. From 2024–2025 to 2025–2026, proficiency increased by 3.02 percentage points in English language arts, 3.76 points in math, and a substantial 15.25 points in science. The school’s ranking improved from the 6th percentile in 2023–2024 to the 22nd percentile in 2025–2026, and its rating increased from zero stars to one. For families evaluating the school, the most important themes are recent improvement alongside continued academic gaps. Eighth-grade math and schoolwide math achievement appear to be the highest-priority areas, while science represents the strongest recent momentum.
Thank you for your feedback!