The top reported proficiency rate is 25% in Math. The lowest is 9% in Science.
Original Research by School Decision on Three Rivers Montessori School
Three Rivers Montessori School is a single-school charter district in Sherburne County serving kindergarten through sixth grade. It is a small setting, and its enrollment reflects that scale. The student body is predominantly white, with a modest share of students who identify as two or more races and a very small number who are Black; other racial and ethnic categories are not represented in the reported counts. Data on students eligible for free or reduced-price lunch, students with disabilities, and English learners were not available, so a family cannot see from this data how the school serves those populations.
The school was publicly reported to have opened in the fall of 2020, which makes it a relatively young institution. No recent referendums, curriculum shifts, or other parent-relevant changes surfaced in a search of publicly available sources.
State assessment results are available for grades three through five, with some grade-level results suppressed because the tested group was too small to report. In third grade, about half of students met proficiency in math, and in reading, a smaller share did. In fifth grade, the share meeting proficiency in math and in reading was very low; science proficiency in fifth grade was also very low. Fourth-grade and sixth-grade results were suppressed, likely due to small tested counts. Participation rates in testing were high overall.
When placed among Sherburne County’s districts, Three Rivers Montessori School’s overall proficiency across tested subjects and grades sat in the bottom quartile. The school’s chronic absenteeism rate was also in the bottom quartile among those districts, which means a larger share of students are missing substantial school time than at most nearby public school districts. Per-pupil current spending fell in the middle range of the county’s districts, in the lower half.
Because the school serves only kindergarten through sixth grade, there is no graduation rate to report, and the school does not offer high school pathways such as Advanced Placement, career and technical education courses, or dual-credit programs.
This is a Montessori program, so families choosing it are likely drawn to its pedagogy and the small, self-contained environment rather than to a broad menu of course offerings. The academic results on state tests show a pattern of uneven performance, with some grades performing well below typical levels. A parent investigating the school may want to ask directly about how instruction is aligned with state standards, what support is available for students who are behind, and what steps the school takes to address the elevated rate of chronic absenteeism. The school’s young age and small size mean that longer-term trends are not yet established, and some data points may shift as the enrollment grows.
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