Addison Elementary
Hartford, WI · Elementary School · Grades -1-5
Addison Elementary is a elementary school in Hartford, WI with 454 students enrolled and a 73% proficiency rate. Part of Slinger School District. NCES data from the U.S. Department of Education.
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About This School
Addison Elementary is a elementary school located in Hartford, Wisconsin. The school serves 454 students in grades -1-5. The student-to-teacher ratio is 17.5:1.
According to EDFacts assessment data, 73% of students meet grade-level proficiency standards in combined math and reading.
16% of students qualify for free or reduced-price lunch.
Addison Elementary is part of the Slinger School District in Wisconsin.
How This School Compares
Addison Elementary has 454 students enrolled, making it smaller than the average school in Slinger School District (670 students). Its 73% proficiency rate is 9 percentage points above the district average of 64%. Compared to the Wisconsin state average of 53%, the school performs 20 points higher.
Frequently Asked Questions
Addison Elementary has 454 students enrolled in grades -1-5. The student-to-teacher ratio is 17.5:1.
According to EDFacts data, 73% of students at Addison Elementary meet grade-level proficiency standards in combined math and reading assessments.
Addison Elementary is part of the Slinger School District in Hartford, Wisconsin. You can view all schools in this district on the district page.
All data on this page comes from the National Center for Education Statistics (NCES) Common Core of Data and EDFacts assessment results. These are official federal datasets published by the U.S. Department of Education.
School profiles are built from NCES directory data and EDFacts assessment results. Proficiency rates reflect combined math and reading performance. Graduation rates are reported for high schools with available data.
For this entity, the underlying data on this page comes from NCES Common Core of Data and EDFacts. The breakdown above is the federal record; the paragraphs below add the per-entity context that makes the headline numbers usable for a real decision rather than just a data lookup.
Every number on this page links back to NCES Common Core of Data and EDFacts; the methodology page describes the inputs, refresh cadence, and known limitations of the underlying data product.
For readers using this page as a decision input, the related-entity pages elsewhere on the site provide the comparison set. The most useful comparison for this entity is typically a peer within U.S. public schools and districts with similar size, similar exposure, or similar geography — not the national-level summary alone.
Source: NCES Common Core of Data, 2026.