The top reported proficiency rate is 53% in English language arts. The lowest is 33% in Science.
Original Research by School Decision on Heather Hill Elem School
Heather Hill Elementary is a small, neighborhood K-5 school in Flossmoor, a low-density, affluent suburb about a half-hour south of Chicago. The school serves a student population that is predominantly Black, with a smaller share of Hispanic, white, and multiracial students. Free or reduced-price lunch data was not available, but housing values in the area are moderate relative to Cook County, and most families in Flossmoor own their homes.
On state math and English language arts assessments in the 2024-25 school year, Heather Hill's results were mixed. In third grade, about one-third of students met proficiency in math, while about two-fifths did in ELA. Performance improved in fourth grade on ELA to about one-half of students proficient. Fifth grade showed the school's strongest results: just over one-half of students reached proficiency in math, and about two-thirds did in ELA. In science, tested only in fifth grade, about one-third of students met the proficiency bar. Participation in testing was strong at or very near complete across all grades and subjects. These results sit above the midpoint for proficiency when compared to other schools across Cook County, though they do not reach the higher end of the district's performance range. A parent may want to ask the school directly about what reading and math supports exist for the students working below proficiency level, and whether the visible strength in ELA in fourth and fifth grades reflects a particular instructional focus.
The school recently completed a significant physical renovation funded by a district-wide bond. In August 2025, Heather Hill opened with a relocated and more secure main office, expanded kindergarten classrooms, a new playground, updated LED lighting, and new interactive technology in classrooms. The district's larger multi-year modernization program covers all six of its buildings and is scheduled to continue through 2027. For families, this means Heather Hill is now a substantially refreshed learning space, and the district is demonstrating financial commitment to its buildings and infrastructure.
The broader district context includes a recent shift in property tax policy. In November 2025, the Flossmoor School District Board voted to recapture property tax revenue that had been abated under a state grant program, signaling that the district may need to raise its levy to avoid future budget deficits. The board has indicated this approach may be repeated, so families should expect the school portion of property taxes to increase. The district also adopted a new artificial intelligence implementation plan that takes effect in 2026-27, requiring teachers to disclose when AI tools are permitted in assignments and students to document their use of AI. This is a durable change to classroom practice that will touch every grade level.
Heather Hill fits a family seeking a neighborhood elementary school in an established, low-density suburban setting with active civic life (library, parks, golf courses, and direct commuter rail access to Chicago). The school is in the midst of physical renewal, and proficiency results are solidly positioned relative to its peer schools in the county, though parents should understand the particular learning gaps and support structures at play. The school serves a majority-Black enrollment in a community that is primarily single-family homeownership and has carried historically stable demographics.
See more original research from School Decision →