School Profile


  • Students: 504, ages 14 months through high school
  • Diversity: 48% minority population
  • Faculty: 35 classroom teachers, 23 assistants, 14 specialists. Each classroom at the Bissonnet Campus (Early Childhood through Elementary) includes at least one teacher and one assistant. All teachers have a minimum of a bachelor’s degree and post-graduate education in the appropriate level of AMI Montessori curriculum. 67% of the classroom teachers and assistants hold a master’s or doctoral post-graduate degree.

Building & Grounds

    Bissonnet Campus

  • Land: 3.44 acres
  • Location: 4600 Bissonnet St. inside Loop 610 in Bellaire, Texas
  • Building: Our architecturally distinctive, custom-designed building (55,000 square feet) accommodates 19 classrooms, a library, art studio, theatre/performance space, gym, child care rooms for Primary and Elementary ages, playgrounds, and gardens.

    Museum District Campus

  • Land: 1.6 acres
  • Location: 1010 Autrey St. in the Houston Museum District
  • Buildings: a renovated glass and masonry building (6,000 square feet) housing the Middle School and a new glass and masonry building (8,300 square feet) housing the High School designed to encourage 21st Century learning. Both include tinker and science labs. Location serves as a doorway to the rich resources of the Museum District.


  • Independent Schools Association of the Southwest (ISAS)
  • International Baccalaureate (IB)

Professional Association Memberships

  • Association Montessori Internationale (AMI)
  • National Association of Independent Schools (NAIS)
  • North American Montessori Teachers Association (NAMTA)
  • Montessori Administrators Association (MAA)
  • Montessori Peer Review Council (MPRC)
  • Texas Private Schools Association (TPSA)
  • Houston Area Independent Schools (HAIS)
  • Independent School Management (ISM)
  • Association for Supervision and Curriculum Development (ASCD)
  • Association of Independent Schools Admission Professionals (AISAP)
  • National Business Officers Association (NBOA)
  • Praesidium

Financial Status

  • The school is a 501(c)(3) non-profit organization.
  • The annual operating budget is $11 million.
  • 11% of the budget is devoted to need-based student financial aid.

    The Post Oak School has operated continuously since 1963 and is a non-profit corporation. With a faculty and staff of over 100, we provide a culturally diverse student population with a comprehensive Montessori education steeped in AMI Heritage. The Post Oak School is fully accredited by the Independent Schools Association of the Southwest (ISAS) and at the high school level, by the International Baccalaureate Organization (IBO).

    Our core curriculum is augmented by specialized offerings (such as art and theater); extracurricular programs; and interscholastic sports. Post Oak serves students from Young Children's Community through High School. The High School opened in the fall of 2012 and graduated its first class in May 2016.

    Fundamental to the Montessori idea is the belief that one’s lifework should have significance both for the individual and for society. To that end, The Post Oak School has cultivated a culture of active, regular community involvement among both students and staff. Our students perform community service as part of their curriculum, and we as a school contribute to the academic community by training teachers, organizing and chairing educational conferences, and hosting respected speakers on a variety of topics.

    For details and photographs of the school's grounds, see our campus and facilities page.

    Our Mission

    The mission of The Post Oak School is to prepare an outstanding Montessori environment that fosters collaboration, cooperation and peace, and to provide experiences that promote curiosity, inquiry and engagement. Designed according to the physical, emotional, social, and intellectual characteristics and needs of the learner, our methods guide and nurture each individual from infancy to adulthood. The school’s approach is grounded in the principles of AMI Montessori education.