The top reported proficiency rate is 37% in English language arts. The lowest is 26% in Math.
Original Research by School Decision on Boulder Hill Elem School
Boulder Hill Elementary serves kindergarten through fifth grade in Montgomery, a fast-growing exurban community on the western edge of the Chicago metro in the Kendall County portion of CUSD 308. The school enrollment is stable at about five hundred students, with a student body that is predominantly Hispanic, followed by white, Black, and Asian students in smaller shares. Free and reduced price lunch data were not available, but housing costs in the area suggest families span a range of economic circumstances.
Academic performance at Boulder Hill is below the midpoint among Kendall County districts. Math proficiency across grades three, four, and five sits in the bottom quartile countywide, while English language arts shows slightly more variation, with fifth grade performing above the school's math results. Fifth grade science proficiency is also modest. The state assessment (IAR for English and math, ISA 2.0 for science) shows students in grades three through five, though all lower grades and grades six and up are not tested because Boulder Hill only serves through fifth grade. Participation rates in tested grades are strong at or near full attendance. It is worth noting that Illinois implemented cut score changes on these assessments beginning in 2024-25, so direct comparison to prior years is not available from this data; a parent may want to ask the school how recent results compare to the school's own trends over time.
The school sits within CUSD 308, a district serving portions of both Kane and Kendall counties across multiple municipalities. Montgomery itself has grown rapidly from subdivision development over the past two decades, centered on large single-family neighborhoods like Lakewood Creek, and the community is anchored around the historic Fox River mill district downtown. The village combines residential growth with a manufacturing and distribution base, anchored by the Aurora Caterpillar plant and newer logistics projects. Housing values in the area have appreciated modestly and exceed the state median, making this a middle-to-upper-income suburb with corresponding property tax obligations.
The district made a deliberate pedagogical shift in 2022 by adopting new K-5 social studies and junior high math curricula centered on project-based and problem-based inquiry, with bilingual English-Spanish materials. This is a daily instructional choice that affects classroom experience for all elementary and middle families. More immediately, in 2026 the district is considering a substantial bond referendum for the November 2026 ballot to fund HVAC, roof, and flooring work at aging schools built during the early-2000s growth boom. Because the district is retiring existing debt simultaneously, homeowners would see a net decrease in property-tax debt service, a material financial consideration for prospective residents weighing school district costs.
Boulder Hill's proficiency levels suggest families should view the school as part of a district-wide context where academic performance is modest. For families considering the area, the combination of newer curriculum pedagogy and upcoming facility decisions means this is a time of transition in the district, with clear communication channels available through the school and district about both instructional approach and capital planning.
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