Academic programming
Three Rivers Montessori School offers an authentic Montessori education to families living in Elk River, surrounding communities, and those living within School District 728. Montessori Philosophy and environmentalism go hand-in hand, therefore the school will align its objectives with those of Elk River as a Green Step City since 2010, and with Osprey Wilds, to instill a connection and commitment to the environment through experiential learning.


Children’s House (Private Preschool ages 3-5) Opening January 2nd, 2024
A limited number of spaces are available each year. Please contact us to find out more!
K/1 Elementary (Kindergarten and 1st grade)
A limited number of spaces are available each year. Please contact us to find out more!
E1 Elementary (2nd and 3rd Grade)
A limited number of spaces are available each year. Please contact us to find out more!
E2 Elementary (4th through 6th Grade)
A limited number of spaces are available each year. Please contact us to find out more!

+ Before and After School Care
We offer convenient before and after school care programs. Please contact us for details.
+ Extra Curricular Programs
+ TRM Testing and Assessments
NWEA Map Growth
- TRM will be moving to the NWEA Map Growth assessment to check every student’s academic growth during the school year. This helps staff identify which individual students are meeting the academic standards per the child’s grade level (on track) and those children who may need supplemental interventions and instructional support to meet academic goals. Progress monitoring may also be used as an additional resource to set goals for learning growth. By utilizing progress monitoring teachers can quickly and frequently assess the academic performance of each student, get a clear measure of improvement and align Montessori instruction in real time.
- Administered for all students K-6.
https://www.nwea.org/map-growth/
MCAs
- The Minnesota Comprehensive Assessments (MCAs) is a state-wide test utilized by each public/charter school to measure student progress toward Minnesota’s academic standards. The administration of this assessment meets federal and state legislative requirements. It is possible for students who receive special education services, and who meet eligibility requirements, to take an alternative assessment instead – the Minnesota Test of Academic Skills (MTAS)
- 3rd-6th Graders will take Reading and Math; 5th graders will also take Science.
2023-2024 SCHOOL YEAR TESTING SCHEDULE
Fall Map Growth:
Reading (K-6) Week of Sept. 12th, 2023
Math (K-6) Week of Sept. 19th, 2023
Winter Map Growth:
Reading (K-6) Week of Jan. 8th, 2024
Math (K-6) Week of Jan. 16th, 2024
Spring Map Growth:
Reading (K-6) Week of April 15th, 2024
Math (K-6) Week of April 22nd, 2024
Fall and Spring Executive Functioning
Fall: Week of September 26th, 2023
Spring: Week of April 15th, 2024
MCAs
(3rd through 6th Grade)
Reading (3rd-6th): Week of April 15th, 2024
Math(3rd-6th): Week of April 22nd, 2024
Science (5th Grade only): Week of April 29th, 2024
ACCESS (for EL students)
Fall: Week of January 29th, 2024
Spring: Week of March 22nd, 2024

Pathfinders Childcare program
Three Rivers Montessori currently offers before and after-school childcare programming for our students. Before care runs from 6:30am to 7:00am and after care runs from 1:45pm to 6:00pm. You must pre-register to secure a spot for our Pathfinders before and after care program.
- Complete the online application. https://forms.gle/63oBkwMk2nSdM2XL7
- The Pathfinders Coordinator will respond within two (2) business days to verify your enrollment.
- Sign the Pathfinders Handbook.
- Complete the registration form.
- Submit payment before or same day of attendance.