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School Contact Information

  • Tel: +94-11-278-4920/2 | Fax: +94-11-278-4999

  • E-mail: | Website: 

  • This Fact Sheet is intended to provide general information. For more information, contact A/OPR/OS ( / +1-202-261-8200) or the school directly.

    The Regional Education Officer for this school is Beatrice Cameron.

Logo for OSC

The Overseas School of Colombo (OSC) is an independent, co-educational day school offering a high quality educational program from early years to grade 12 for students of all nationalities.  The school was founded in 1957.  The school year comprises of two semesters from August to December, and from January to June.  The school offers a strong university preparatory program, varied extracurricular and robust service programs, and has a caring and enthusiastic teaching staff.

Organization: OSC is a not-for-profit organization and is governed by a seven-elected parent board who serve to support of the Head of School ensuring that the school is well positioned for a bright future. The Head of School is a non-voting board member and is the Chief Administrator (Executive Officer).

Curriculum: The curriculum offered is the International Baccalaureate (IB).  The School runs all three programs, PYP, MYP and DP.  OSC also integrates the AERO standards, Common Core, and other international and relevant standards to ensure its curriculum and scope and sequence is well organized and builds on from one year to the next.  In Grades 9-12 students gain credits towards the OSC High School Diploma.  OSC is a College Board Testing site. OSC administers the PSAT, SAT, as well as other external and standardized testing throughout the school.  OSC offers specialist classes such as yearlong swimming (in its 25 meter pool), music, art, drama and performance, design, and offers language acquisition classes in Sinhala, French, Mandarin, and Spanish.  A wide variety of choices are available to high school students.  All IB courses are credit bearing for the High School Diploma.  OSC students are further supported by three full time Counselors, one who is a licensed School Psychologist.

Faculty: In the 2021-2022 school year, OSC has 133 total staff including 59 teachers. Our faculty and staff represent 14 countries: Australia, Belgium, Bulgaria, Canada, France, India, Ireland, Italy, South Africa, Sri Lanka, Taiwan, United Kingdom, United States, and Venezuela. All teaching faculty maintain a teaching certificate and university degree registered from their countries of origin, are vetted carefully with background checks and are trained in strict child safeguarding measures.

Enrollment: At the beginning of the 2021-2022 school year, enrollment was 357 (PS-grade 5: 161 and grades 6-12: 232).

Facilities: The school is in a purpose-built facility on a five-acre site near the parliamentary complex in the new administrative capital of Sri Jayewardenepura Kotte.  It is equipped with two libraries, three art rooms, four newly renovated science laboratories (2021), four design rooms, one of which is a maker space room, a black box theatre, 400-seater auditorium and music rooms.  OSC’s sports facilities include a large playing field, a gymnasium, and a 25-meter pool.

Finances: In the 2021-2022 school year, annual tuition rates are as follows:  early years: $11,750; K: $17,7000; 1-5: $20,900; 6-8: 21,950; 9-12: $25,250.  The school also charges a one time, nonrefundable registration fee of 10,000 and a refundable deposit fee of $135 for early years through grade 5, and $270 for grades 6-12. All fees are quoted in US Dollars.

Special Needs: Download the Special Needs Profile (Special Needs Sri Lanka, Colombo) for this school to learn more about their capability to support students with exceptionalities.

This Fact Sheet is intended to provide general information. Prospective users of the schools may wish to inquire further of A/OPR/OS or contact the school directly for more specific and up-to-the-minute information. Information and statistics are current as of September 2021 and are provided by the school.

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