Start of School 2025 -2026

We are excited to welcome you back to school for this new academic year! Below you will find important dates and information related to the start of school. Please scroll down to view all items.

Important Middle School Dates

Orientation Programming
Thursday, August 28: Grade 8 Orientation (Camp Nonesuch and on Campus) 
Friday, August 29: Grades 6 and 7 Orientation (On Campus)
First Week of School
Tuesday, September 2: First day of school - Leadership Lab in Middle School 
Friday, September 5: First day of academic classes in Middle School
Monday, September 8: School picture day
Key Parent Events, Fall 2025
Thursday, August 28 (9:00 a.m.): Grade 8 Parent Coffee
Friday, August 29 (11:00 a.m.): Grades 6 and 7 Parent Coffees 
Thursday, September 4: Middle School sports begin 
Thursday, September 11: Middle School Parent Orientation (6:30 p.m.)
Thursday, September 25: Parents' League Welcome Meeting (8:30 a.m.)
Thursday, September 25: Middle School Mini School (6:30 p.m.)

Important Upper School Dates

Orientation Programing, Leadership Retreat, and Pre-Season Athletics
eptember 1: Student Leadership Retreat (for students in designated leadership positions, including varsity captains)  
September 1: Grade 9 Welcome 
September 1: Grade 9 On-Campus Orientation
September 2-3: Grade 10 Overnight Orientation (at Windsor Mountain)
September 2-3: Grade 11 Orientation
September 4-5: Varsity Pre-Season Practices and Tryouts
First Week of School
Tuesday, September 8: First day of school
Thursday, September 10: Sub-varsity sports begin 
Monday, September 14: School picture day
Monday and Tuesday, September 14 and 15 (3:30 to 5:00 p.m.): Upper School Fall play auditions

Key Parent Events, Fall 2026
Monday, September 8 (8:30 a.m.): 9th Grade Parent Coffee
Tuesday, September 9 (8:30 a.m.): 10th Grade Parent Coffee
Tuesday, September 9 (6:30 p.m.): 12th Grade Parent Meeting with the College Office 
Wednesday, September 10 (8:30 a.m.): 11th Grade Parent Coffee
Monday, September 29 (6:30 p.m):  Grade 9 dinner and discussion
Saturday, October 3: Upper School Mini School (8:30 a.m. to 12:30 p.m.)
November 23-24: Parent Conferences 






Information for Middle School

Information for Upper School

333 Winter Street Weston, MA 02493
P: 781.235.9300 F: 781.239.3614
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Rivers admits academically qualified students and does not discriminate against students or families on the basis of race, religion, gender, sexual orientation, disability, or ethnic or national origin in the administration of its educational programs, admissions policies, scholarship and loan programs, athletic programs, and other school-administered programs.