Thank you for your interest in applying to West Side Montessori School.


To be considered for September 2020 enrollment:

  • Multi-Age Program applicants must have been born on or before December 31, 2017.
  • Twos Program applicants must have been born between September 1, 2016 and September 1, 2018.

We regret that we cannot make exceptions to this policy.

Admissions Process

Our admissions process begins in the fall one year before the desired year of entry.

Open houses are designed to help you get to know our school before or after submitting an application. During these parent-only evening events, you will have an opportunity to ask questions, tour classrooms, speak to WSMS faculty, trustees, and parents, and hear Mimi Basso, our Head of School, discuss the philosophy and mission of West Side Montessori School.

The Twos Program classrooms at 302 West 91st Street will be open from 6:45-7:15 p.m. Multi-Age classrooms at 309 West 92nd Street will be open from 7:00-7:30 p.m. A meeting with Mimi Basso followed by a Q&A session will be held from 7:30-8:00 p.m.

Parents are invited to attend an open house before or after submitting an application. Reservations are not required.

Reservations are not required. Please click here for more details.

The online application for the 2020-2021 school year is available by clicking here. The application deadline is January 8, 2019. We treat all applications submitted by the January deadline with equal care and consideration. Please note that in order to meet the ISAAGNY notification dates, all appointments must be completed by February. The $50 application fee is submitted by credit card with the online application. Fee waivers are available for families applying for financial aid. Please call the front desk to request a fee waiver.

After you have submitted your application, you will receive an email with information about scheduling your classroom observation. These group sessions are for parents only and are held on Tuesday and Thursday mornings from 9:15 to 10:30 a.m. from mid-October through January. During the classroom observation, parents are invited to quietly observe in two of our Multi-Age classrooms for about 30 minutes, followed by a presentation about our program with the Director of Admissions. Parents of sibling applicants are not required to attend.

After your classroom observation, you will be invited to schedule a parent interview. During this 30-minute visit, parents meet with a current or alumni WSMS parent from our Admissions Committee. Parent interviews are mostly held on weekday mornings, but some afternoon appointments may be available depending on interviewer availability. The parent interview provides an opportunity for you to share individual information about your child and family. Equally important, it provides a time for you to gain additional information about the school from the perspective of a parent. To read more about our parent-to-parent approach to admissions interviews, please click here.

After your classroom observation, Multi-Age Program applicants will be invited to schedule a group child visit. These 20-minute visits are held on Saturday mornings. Children will be invited to participate in a classroom activity with a small group of other applicant children and WSMS teachers. Due to space limitations in our classrooms, we invite one parent to accompany the child into the classroom. Twos Program applicants do not participate in child visits.

After submitting the online application, families who have indicated that they will be applying for financial aid (FA) will be sent information by email about submitting an FA application. We use a system called SSS to process financial aid applications. The SSS application is available beginning in October and the deadline to apply is January 15. There is a fee of $49 due to SSS at the time of application. A limited number of fee waivers are automatically assigned through SSS based on financial information that you supply to the system.

We notify families who have completed the application process by email in accordance with ISAAGNY notification dates (see sidebar). Families who have been accepted will be sent a contract and must return the signed contract and deposit by the ISAAGNY reply deadline in order to enroll. We maintain an active wait list during the parent reply period and notify families as spaces become available.


Judy Lyons at jlyons@wsmsnyc.org

Key Admission Dates

  • Application deadline January 8, 2020
  • Financial aid application deadline January 15, 2020
  • Appointment completion deadline January 15, 2020
Notification Dates and Reply Deadlines, according to ISAAGNY Guidelines (Independent School Admissions Association of Greater New York)
  • Early Decision Notification Dates (For siblings/legacy families who have chosen this option): between December 2, 2019 and January 17, 2020
  • Early Decision Parent Reply Deadline by noon on January 24, 2020
  • Regular Decision Notification Date February 27, 2020
  • Regular Decision Parent Reply Deadline: by noon on March 5, 2020

West Side Montessori School welcomes students and families of any race, color, sexual orientation, or national or ethnic origin. We do not discriminate on the basis of race, color, sexual orientation, or national or ethnic origin in administration of our educational policies, admissions policies, scholarship and loan programs, and other school-administered programs.