September
8
Classroom Orientations - parents only -UE & JR
An opportunity to learn more about your child's classroom, schedule, what to expect, etc. Please plan to attend. Upp...
September
9
Classroom Orientation - parents only - Lower Elementary
An opportunity to see your child's classroom, ask questions, get a glimpse into classroom life. Parents only please. 5...
September
9
First Day of Children's House
Children's House before and after school care is available beginning today. It is available only to students who have s...
September
15
Annual Fall picnic and barbecue
Join other Cornerstone families for a potluck picnic and barbecue. $5.00 per person charge for all you can eat burgers...
September
16
Rain Date for Annual Fall Picnic
See September 15 listing for details
Quick Facts

Enrollment: 150
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