The top reported proficiency rate is 59% in English language arts. The lowest is 36% in Math.
Original Research by School Decision on Frederick School
Frederick School serves grades five and six in Grayslake, a residential village about forty miles north of downtown Chicago in Lake County. The school is part of Grayslake CCSD 46, a district that has undergone significant structural and curricular shifts in recent years.
The school enrolls a student body that is roughly evenly split between White students and Hispanic students, with smaller Asian and Black populations and a very small number of Native Hawaiian and multiracial students. Free-and-reduced-price-lunch data was not available, so a parent may want to ask the school directly about the economic profile of Frederick's families. Data on students with IEPs or English learners was also not provided.
Frederick School's recent test results show mixed performance. In ELA, students in grade five showed proficiency around the midpoint for their grade level, while grade six students performed somewhat better. In mathematics, grade five performance was notably lower, while grade six improved. Science proficiency in grade five was around the midpoint. The school's overall proficiency index places it below the midpoint among Lake County districts. It is worth noting that Illinois changed the cut scores for its assessments in 2024-25, which can affect year-to-year trend interpretation. A parent may want to understand the school's plans for strengthening math outcomes, particularly at the fifth-grade level.
The district made substantial changes to the grade five through eight schedule beginning in 2024-25, Frederick's first year of operation under the new structure. This reorganization created consistent instructional minutes across Frederick School, Grayslake Middle School, and Park Campus, added a double block of English Language Arts for fifth graders, and brought band and consistent elective offerings into the regular school day at grades six through eight. These are significant changes to how the school day is organized and likely still settling in as implemented.
In the broader district context, voters approved a limiting-rate referendum in March 2024, allowing funding for capital repairs, safety improvements, teacher retention, and program maintenance. Because long-term debt is being paid off in 2025, property tax rates are expected to decline despite the new referendum, a meaningful shift for families in the area. The district is also launching a two-way dual language program in Spanish and English at kindergarten beginning in 2026-27, which signals investment in multilingual pathways from the elementary level forward.
Grayslake itself is a small suburban village with a strong walkable downtown anchored by Center Street, featuring local restaurants, shops, and community events like the Grayslake Summer Fest. A compact Community Campus connects civic amenities including Central Park, the library, an aquatic center, and parks within walking distance of downtown and two Metra rail stations that provide commuter access to Chicago. The College of Lake County is also based here. The housing market has seen modest growth, with home prices and rents rising modestly year over year. The village is in the midst of planned development, including new residential subdivisions, potential redevelopment of the former fairgrounds site, and a large data-center campus focused on AI computing.
For a parent considering Frederick School, the key questions center on the school's response to lower-than-county-average proficiency, particularly in math, and how the new district schedule is working in practice. The school is part of a district actively investing in facilities and teacher retention, and serving a diverse, relatively balanced student population in a stable, growing suburban community.
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