Summary:
ZIP code 98166 has three public elementary schools—Marvista Elementary, Gregory Heights Elementary, and Seahurst Elementary School—all serving pre-kindergarten through fifth grade in the Highline School District. Together, they enroll 1,425 students, but academic results vary considerably across the area.
Marvista Elementary is the strongest overall choice based on the available measures. It ranks 327th out of 1,138 Washington elementary schools, placing it in the 71st percentile, and exceeds state averages in English language arts, math, and science. Its overall proficiency average is 58.92%, compared with 49.41% at Gregory Heights Elementary and 22.53% at Seahurst Elementary School. Marvista also has the lowest student–teacher ratio, at 15.9, and has shown steady improvement in state rankings over the past three years. Gregory Heights is a middle-performing school, ranking in the 56th percentile, and its 2025–26 results improved notably, especially in English language arts. It performs above district averages in all three subjects and slightly exceeds state averages in English language arts and math.
Seahurst Elementary School needs the most academic attention. It ranks in the 7th percentile statewide, with results below both district and state averages in every reported subject. Fifth-grade math is a challenge across all three schools, with proficiency of 38.36% at Marvista, 35.38% at Gregory Heights, and just 10.94% at Seahurst. Families comparing schools should also consider staffing and support needs: Seahurst has the highest student–teacher ratio, while its math and science results declined in 2025–26. Overall, Marvista leads clearly, Gregory Heights offers improving middle-range performance, and Seahurst presents the greatest need for sustained academic support.
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