Serving 220 students in grades Prekindergarten-12, Isthmus Montessori Academy Public ranks in the bottom 50% of all schools in Wisconsin for overall test scores (math proficiency is bottom 50%, and reading proficiency is bottom 50%).
The percentage of students achieving proficiency in math is 20-24% (which is lower than the Wisconsin state average of 40%). The percentage of students achieving proficiency in reading/language arts is 45-49% (which is higher than the Wisconsin state average of 38%).
The student-teacher ratio of 15:1 is higher than the Wisconsin state level of 13:1.
Minority enrollment is 31% of the student body (majority Hispanic), which is lower than the Wisconsin state average of 33% (majority Hispanic).
Quick Facts (2026)
- School Type: Charter School
- Grades: Prekindergarten-12
- Enrollment: 220 students
- Student-Teacher Ratio: 15:1
- Minority Enrollment: 31%
- Overall Testing Rank: Bottom 50% in WI
- Math Proficiency: 20-24% (Btm 50%)
- Reading Proficiency: 45-49% (Top 30%)
- Science Proficiency: 40-59% (Top 50%)
- Source: National Center for Education Statistics (NCES), WI Dept. of Education
School Overview
Isthmus Montessori Academy Public's student population of 220 students has declined by 8% over five school years.
The teacher population of 15 teachers has grown by 36% over five school years.
School Type
Grades Offered
Grades Prekindergarten-12
(Supplemental Virtual)
(Supplemental Virtual)
Total Students
220 students
Gender %
Total Classroom Teachers
15 teachers
School Rankings
Isthmus Montessori Academy Public ranks within the bottom 50% of all 1,962 schools in Wisconsin (based off of combined math and reading proficiency testing data).
The diversity score of Isthmus Montessori Academy Public is 0.50, which is less than the diversity score at state average of 0.53. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#1039 out of 1962 schools
(Bottom 50%)
(Bottom 50%)
Math Test Scores (% Proficient)
20-24%
40%
Reading/Language Arts Test Scores (% Proficient)
45-49%
38%
Science Test Scores (% Proficient)
40-59%
44%
Student-Teacher Ratio
15:1
13:1
American Indian
n/a
1%
Asian
3%
4%
Hispanic
13%
14%
Black
5%
9%
White
69%
67%
Hawaiian
n/a
n/a
Two or more races
10%
5%
All Ethnic Groups
Participates in the National School Lunch Program (NSLP)
Yes
Eligible for Free Lunch
4%
37%
Eligible for Reduced Lunch (22-23)
1%
4%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), WI Dept. of Education
Frequently Asked Questions
What is Isthmus Montessori Academy Public's ranking?
Isthmus Montessori Academy Public is ranked #1039 out of 1,962 schools, which ranks it among the bottom 50% of public schools in Wisconsin.
What percent of students have achieved state testing proficiency in math and reading?
20-24% of students have achieved math proficiency (compared to the 40% WI state average), while 45-49% of students have achieved reading proficiency (compared to the 38% WI state average).
How many students attend Isthmus Montessori Academy Public?
220 students attend Isthmus Montessori Academy Public.
What is the racial composition of the student body?
69% of Isthmus Montessori Academy Public students are White, 13% of students are Hispanic, 10% of students are Two or more races, 5% of students are Black, and 3% of students are Asian.
What is the student-teacher ratio of Isthmus Montessori Academy Public?
Isthmus Montessori Academy Public has a student ration of 15:1, which is higher than the Wisconsin state average of 13:1.
What grades does Isthmus Montessori Academy Public offer ?
Isthmus Montessori Academy Public offers enrollment in grades Prekindergarten-12 (Supplemental Virtual).
What school district is Isthmus Montessori Academy Public part of?
Isthmus Montessori Academy Public is part of Isthmus Montessori Academy Inc School District.
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