Summary:
Sebastopol has three middle schools serving grades 5–8: Hillcrest Middle and Twin Hills Charter Middle serve grades 6–8, while Brook Haven Middle also serves grade 5. In 2025–26, all three were above the state in ELA, but results differed considerably by subject and school; the clearest difference was in math, where proficiency ranged from 32% at Brook Haven to 58% at Hillcrest, a 26-point spread.
Hillcrest led in ELA and math, with 67% proficiency in ELA and 58% in math; its ELA result was 10 points above the next-highest school, Twin Hills at 58%. Twin Hills led in science at 54%, 10 points ahead of Hillcrest and 18 points ahead of Brook Haven. Brook Haven was lowest in math at 32%, 6 points below the state’s 38%; its science result, 36%, was just below the state’s 36%. In grade 8 math, Twin Hills was especially strong at 70%, while Brook Haven had 22%.
Scores and rankings show different patterns over time: ELA proficiency fell at all three schools from 2024–25 to 2025–26, while math and science changes varied by school; Twin Hills’ science rose 5 points, while Hillcrest’s fell 9. SchoolDigger ranks Hillcrest at the 86th percentile (4 stars), Twin Hills at the 81st (4 stars), and Brook Haven at the 60th (3 stars) for 2025–26. The reported student–teacher ratios for 2024–25 were 16.8 at Hillcrest, 16.9 at Twin Hills, and 18.7 at Brook Haven. All three report free/reduced lunch eligible (FRL) for 2024–25: 30% at Hillcrest, 43% at Brook Haven, and 21% at Twin Hills; these are contextual measures, not explanations of results. Brook Haven also has a striking reported chronic-absenteeism figure: 88% in 2025–26, compared with 14% at Hillcrest, 11% at Twin Hills, and 18% statewide. Comparisons of all-grades results are not perfectly like-for-like because Brook Haven includes grade 5.
Thank you for your feedback!