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A
Schools in Addison · Hartford Union High School District, Slinger School District

Addison’s public schools outscore 90% of Wisconsin districts

Math proficiency in Addison’s districts is 61%, above the Wisconsin average (39%). The grade covers the two public school districts serving Addison, from kindergarten through graduation, on state tests and graduation. Each state writes its own tests, so this is the one TownRatings grade compared within Wisconsin, not nationally.

#23of 362 Wisconsin townsK–12Where will my kid go?

From Wisconsin state tests taken in spring 2022, when 98% of students in the tested grades sat them, and the class of 2023’s four-year graduation rate, as reported to the U.S. Department of Education.

Reading proficiency
59%
▲ 21 pts vs WI 38%
2021–22
Math proficiency
61%
▲ 22 pts vs WI 39%
2021–22
Graduate on time
98%
▲ 8 pts vs WI 90%
class of 2023
Spent per student
$14.0K
▼ 15% vs WI $16.5K
FY2024 · Slinger
Students per teacher
16.6
WI 13.6 · larger classes
Schools in town
2
3,987 students on the public path
In brief

Addison’s schools, in brief

Better than its incomes would predict

Among the 770 Wisconsin towns with household incomes within a quarter of Addison’s, its schools beat 95%, higher than their 90% against all the state’s districts. The grade ↓

Above the state on both counts

Reading proficiency is 59% and math 61% across both districts in spring 2022, against 38% and 39% statewide; 98% of the class of 2023 graduated in four years, against 90%. Test scores ↓

Spending and class size

Hartford Union High spends $14,809 per student and Slinger $14,002, against $16,459 across Wisconsin (FY2024). Neither counts toward the grade. Districts ↓

Written from the figures on this page. Tests are from 2021–22, graduation from the class of 2023; each school’s own letter uses 2020–21 results.

The School Grade

What’s behind Addison’s grade

A Test scoresA Graduation

A: better than 90% of Wisconsin school districts, #23 of 362 Wisconsin towns. Test scores and graduation are both above the Wisconsin average; graduation is the stronger of the two.

Wisconsin school districts we grade (441)Better than 90%
Lower resultsHigher results
Wisconsin towns with similar household incomes (770)Better than 95%
Towns in Washington County (12)Better than 83%
A firm grade. Ordinary sampling error in 2,002 test results and a graduating class of 310 wouldn’t change the letter. The tests are from spring 2022, when 98% of Addison’s students in the tested grades sat them (2,002 in math, 2,002 in reading).

How TownRatings grades schools →

Where will my kid go?

Pick a grade. These are the public schools that serve Addison, with each school’s own grade.

The path, start to finish
PK–52 elementary schoolsDepends on your addressA to A+
6–8Slinger Middlein SlingerA
9–122 high schoolsDepends on your addressC+ to A

Addison runs its own schools through grade 12 (Slinger School District). From grade 9, students attend the Hartford Union High School District, shared with Ashippun, Erin, Hartford, Hartford, Herman, Hubbard, Hustisford, Iron Ridge, Lebanon, Neosho, Richfield, Rubicon, Slinger and Theresa. Its middle school is in Slinger. Parts of Addison (9% and 3% of its land) are served by Hartford Joint No. 1 and West Bend instead. To confirm the school for a specific address, ask the district.

Two districts serve Addison

Spending and class size are shown but don’t count toward the grade. Each district’s own page has every school.

Hartford Union High School DistrictGrades 9–12 · 1 schools · 1,324 students, down 1% since 2020–21 · 16.6 per teacher (WI 13.6)
$14,809WI $16,459 · FY2024
B
Slinger School DistrictGrades PK–12 · 5 schools · 3,234 students, down 2% since 2020–21 · 16.6 per teacher (WI 13.6)
$14,002WI $16,459 · FY2024
A
Test scores · 2021–22

Well above the state in reading

Reading · 9–12, Hartford Union High School District44%
State average 38.1% · 289 students tested
Math · 9–12, Hartford Union High School District34%
State average 38.7% · 289 students tested
Reading · PK–12, Slinger School District62%
State average 38.1% · 1713 students tested
Math · PK–12, Slinger School District65%
State average 38.7% · 1713 students tested

Addison vs. its neighbors

Schools grades for the Wisconsin towns that share Addison’s borders.

Schools next door
TownSchoolsMain districts
AddisonASlinger PK–12 · Hartford Union High 9–12
HermanB+Herman-Neosho-Rubicon PK–8 · Hartford Union High 9–12
HartfordAHartford Joint No. 1 PK–8 · Slinger PK–12 · Hartford Union High 9–12
WayneAKewaskum
West BendAWest Bend PK–12 · Slinger PK–12

2 of the 4 neighbors share Hartford Union High with Addison for grades 9–12, so their letters differ mainly through the lower grades.

Every school in Addison

5 schools. Each public school’s letter compares its own 2020–21 reading and math results with Wisconsin’s other public schools (the newest school-level results we have).

District schools in Addisonby address
Addison Elementary
Elementary · Grades PK–5 · Hartford
A+
441 students17:1Rate it →
Allenton Elementary
Elementary · Grades PK–5 · Allenton
A
417 students16:1Rate it →
Also serving Addisonin other towns
Slinger Middle
Middle · Grades 6–8 · Slinger
A
740 students17:1Rate it →
Hartford High
High · Grades 9–12 · Hartford
C+
1,324 students17:1Rate it →
Slinger High
High · Grades 9–12 · Slinger
A
1,065 students17:1Rate it →

Questions about Addison’s schools

Are Addison’s schools good?

By Wisconsin’s own tests, yes: the public schools Addison children attend outscore 90% of Wisconsin’s school districts on tests and graduation, an A Schools grade, #23 of 362 Wisconsin towns. Among towns with similar incomes they beat 95%. Tests are from 2021–22, graduation from the class of 2023.

What school district is Addison in?

Two districts: Slinger School District runs grades PK–12, and Hartford Union High School District runs grades 9–12, shared with Ashippun, Erin, Hartford, Hartford, Herman, Hubbard, Hustisford, Iron Ridge, Lebanon, Neosho, Richfield, Rubicon, Slinger and Theresa.

Where do Addison kids go to high school?

One of 2 high schools, depending on your address: Hartford High and Slinger High.

What is Addison’s graduation rate?

98% of the class of 2023 in Hartford Union High School District graduated in four years, against 90% across Wisconsin.

How much does Addison spend per student?

$14,809 in Hartford Union High School District and $14,002 in Slinger School District (FY2024), against $16,459 across Wisconsin. Spending doesn’t count toward the grade.

Parents talk

What Addison families are saying about school.

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School data: state test results (2021–22, with participation) and four-year graduation rates (class of 2023) reported to the U.S. Department of Education (EDFacts via ED Data Express); each school’s own letter uses its 2020–21 results (EDFacts via the Urban Institute); schools and enrollment from NCES (2024–25; private schools 2023–24); spending from the Census Bureau’s school finance survey (FY2024). The School Grade is our own summary, graded within Wisconsin. Stars are from neighbors.