Summary:
ZIP code 53027 covers Hartford, Wisconsin, and includes six public schools — four elementary, one middle, and one high school — enrolling about 3,465 students across four separate districts: Hartford J1 School District, Hartford Union High School School District, Slinger School District, and Erin School District. The elementary schools serve PK–5, except Erin Elementary, which serves PK–8. Hartford High alone enrolls 1,324 students — roughly 38% of the total — while the four elementaries together enroll about half.
The academic leaders are Addison Elementary and Erin Elementary, followed closely by Rossman Elementary. Addison ranks in the 87th percentile with 4 stars, and its math results are exceptional: 91.80% proficient in 3rd grade, 79.71% in 4th, and 72.06% in 5th. Erin is strong across grades 3–8, including 79.55% in 7th grade math and 77.08% in 8th. Rossman ranks in the 83rd percentile and posts math proficiency of 70.31%–74.58%. Hartford High reports a 96.8% graduation rate and ACT scores above state averages in ELA, math, and science, though its Forward social studies proficiency of 41.92% falls below the state's 48.25%.
Attendance divides these schools sharply. Chronic absenteeism is 0.5% at Addison and 1.4% at Erin, but 26.1% at Central Middle — the lowest-ranked school here, at 33rd percentile with 2 stars — 19.6% at Lincoln Elementary, and 18.3% at Hartford High, against a state rate of 17.3%. Central Middle's 8th grade proficiency is 37.68% in ELA, 43.48% in math, and 36.23% in science. Lincoln has the highest free/reduced-lunch rate (48.7%) and the smallest classes, yet mixed results. Notably, the highest-spending schools are not the highest performers, and the lowest-spending school, Erin, performs well.
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