February
27
Winter Break
Have fun!
March
21
Early Release - Faculty Professional Afternoon
Primary - 11:30 dismissal All others - 12:30 dismissal
April
23
Spring Break
Have Fun!
May
10
Sign up for May conferences
Beginning today you may sign up for conferences which are the afternoon of May 24 and all day May 25. These dates are p...
May
24
Conferences in the Afternoon - early release
All Primary students dismissed at 11:30 All others dismissed at 12:30
Quick Facts

Enrollment: 165
Grades: Toddler through 8th grade
Founded: 1985 – Affiliated with American Montessori Society
Financial Aid: Need-based tuition assistance is available. Please ask for an application
Hours: Early morning care: 7:30 to 8:15
Student drop-off begins at 8:15.
Classroom Start Times: Primary:
8:30 to 11:30
8:30 to 1:30
8:30 to 3:00


Dismissal times in primary are determined by child's developmental readiness for an extended academic day.

Elementary and Junior Class:
8:30 to 3:00
After School Care: 5:00 – last dismissal. (open to all students except toddlers)
Summer Camp: 6 weeks, 3 years to 9 years.
Faculty: 25 faculty and staff, 21 of whom have one or more levels of Montessori certification
Click here for our faculty page.

Board of Directors: 8
High Schools Attended by Cornerstone Graduates:
  • The Peddie School
  • St. Thomas Aquinas
  • The Governor's Academy
  • Northfield Mount Hermon
  • Tilton Academy
  • Phillips Exeter Academy
  • Exeter High School
  • The White Mountain School
  • Milton Academy
  • Portsmouth High School
  • Somersworth High School
  • Brewster Academy
  • Berwick Academy
  • Gould Academy
  • The Holderness School
  • York High School
  • Proctor Academy
  • Tabor Academy
  • New Hampton School
  • The Middlesex School
  • Winnacunet High School
  • Westover School
  • Marshwood High School
  • Sutton Park School, Ireland
  • Catherine McAuley High School
  • Cocheco Arts and Technology Academy
  • Coe-Brown Northwood Academy
  • Portsmouth Christian Academy
  • Noble High School
  • The Putney School
  • The Cambridge School of Weston
  • Great Bay E Learning Charter School
The Cornerstone School 146 High Street Stratham, NH 03885 (603) 772-4349