Summary:
ZIP code 54840 covers Grantsburg, Wisconsin, and includes four schools serving pre-kindergarten through 12th grade, all within the Grantsburg School District: Grantsburg Elementary (PK–3), Grantsburg Middle (4–8), Grantsburg High (9–12), and the K–12 alternative school iForward, with total listed enrollment of 1,831 students.
The traditional schools post strong results. Grantsburg Elementary has the highest early-grade proficiency in the ZIP — 3rd grade ELA at 78.57% and math at 75.00% in 2025–2026, both well above state — along with the lowest student-teacher ratio (10.8) and highest per-student spending ($16,046). Grantsburg Middle is the broadest proficiency standout, above state in most displayed subjects, including 4th grade math (75.41%), 4th grade social studies (80.33%), and 8th grade social studies (78.95%), though 6th grade ELA (44.83%) and math (46.55%) are weaker. Grantsburg High stands out for completion: a 96.8% graduation rate and 0.0% dropout rate, plus ACT results above district in all three subjects and 10th grade social studies above state.
iForward is the outlier: 1,030 students, about 56.3% of all listed enrollment, with the highest free/reduced lunch share (60.29%), lowest per-student spending ($10,075), and highest student-teacher ratio (24.2). Its reported 0.0% chronic absenteeism is far below the traditional schools, while its 80.3% graduation rate and 2.9% dropout rate trail district and state, and its ACT scores are much lower. Because it is so large, it likely influences district-wide figures. The district-wide rank of 302 of 432 (30th percentile, 2 stars) masks strong individual school performance.
Thank you for your feedback!