Interscholastic Association of Southeast Asian Schools
Corporate brand
UnclaimedIASAS is an association of six private international schools that coordinates interscholastic sports, arts, cultural, leadership, service, and academic activities across Southeast and East Asia.
Last updated August 25, 2026
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Overview
The Interscholastic Association of Southeast Asian Schools, commonly known as IASAS, is a school association linking six private international schools in and around Southeast Asia: International School Bangkok in Thailand, International School of Kuala Lumpur in Malaysia, International School Manila in the Philippines, Jakarta Intercultural School in Indonesia, Singapore American School in Singapore, and Taipei American School in Taiwan. Rather than operating as a commercial consumer brand, IASAS functions as an interschool framework through which member institutions organize recurring student competitions, conventions, exchanges, and collaborative events. Its most visible activity is the annual sports program. Athletic competitions are arranged in three broad seasons, each lasting roughly ten weeks and ending in tournaments or culminating events. The first season, generally held in October, includes soccer, volleyball, and cross-country running. The second season, usually held in February, includes basketball, men's rugby union, women's touch rugby, swimming, and tennis. The third season, normally held in April, includes badminton, women's fastpitch softball, men's baseball, golf, and track and field. During the seasons, smaller athletic exchanges may bring together three or four schools, allowing teams to compete without the formal awards associated with the main IASAS tournaments. Hosting responsibilities rotate among the member schools. The location of an event depends on the host institution's facilities and the circumstances of its country. Students traveling for competitions commonly stay with families connected to the host school, reinforcing the association's educational and community-building purpose. Participants are expected to follow a formal code of conduct while representing their schools. IASAS also maintains a substantial non-athletic program. Its Cultural Convention includes music, dance, drama, art, stagecraft, speech, and debate. Music participation can involve choir, strings, band, and piano, while speech activities include original oratory, oral interpretation, extemporaneous speaking, and impromptu speaking. Model United Nations is generally held in November and may include schools beyond the six core members. A Leadership Convention for student peer-helper groups was held in the mid-2000s but was discontinued after the 2007 event as the association sought to reduce travel associated with non-competitive activities. Other activities include mathematics comparisons based on American Mathematics Contest results, an experimental chess program introduced in the 2010s, the IASAS Film Exchange, and a Service Conference conducted virtually since 2021. These programs broaden the association beyond conventional school athletics and provide structured opportunities for students interested in academic, artistic, civic, and community-service work. The COVID-19 pandemic interrupted the association's normal operating model. No in-person IASAS events were held during the 2020–21 and 2021–22 academic years. Later programming returned to an in-person and multi-campus format. In the 2025–26 school year, tournaments were distributed among several host schools by sport rather than concentrated at one institution for each season. This arrangement placed first-season volleyball and cross country in Jakarta, soccer in Manila, second-season swimming in Singapore, basketball and tennis in Bangkok, rugby and touch in Taipei, and third-season baseball and softball in Kuala Lumpur, with track and field, golf, and badminton assigned to Singapore and Jakarta. The distribution illustrates IASAS's continuing reliance on rotating institutional hosting and cross-border student mobility.
History
IASAS was established as a cooperative structure for six private international schools serving globally mobile families in Southeast and East Asia. The association's precise founding date and founders are not identified in the supplied reference material. Its operating model is based on institutional collaboration rather than a central commercial office: member schools take turns hosting events, provide facilities and local coordination, and send student delegations to other campuses. Sports form the association's core recurring program. Competitions are divided into three seasonal cycles, with sport-specific tournaments held at the end of each cycle. The program has included soccer, volleyball, cross country, basketball, rugby union, touch rugby, swimming, tennis, badminton, softball, baseball, golf, and track and field. Athletic exchanges held during the seasons provide additional competition among subsets of the membership. A notable variation occurred in fall 2019, when International School of Manila hosted a Super IASAS bringing all first-season sports together at one location. The association's educational scope expanded beyond athletics through cultural conventions, Model United Nations, leadership activities, academic comparisons, film, chess, and service programming. The Cultural Convention brings together music, dance, drama, visual art, stagecraft, speech, and debate. Model United Nations is normally a non-competitive event and can involve schools outside the core IASAS group. The Leadership Convention was held in 2005, 2006, and 2007 for student peer-helper groups, but was discontinued in the 2008–09 academic year in an effort to reduce unnecessary travel. IASAS also developed less traditional exchanges. Chess has been treated as an experimental activity since 2013. The IASAS Film Exchange has operated since 2016, allowing selected student films from member schools to circulate among the association. Service collaboration shifted toward a virtual format in 2021, when the IASAS Service Conference began connecting service clubs and project leaders online. The COVID-19 pandemic substantially disrupted the association's travel-dependent model. No in-person events were held in the 2020–21 or 2021–22 academic years. Subsequent programming restored physical gatherings, while the experience encouraged flexible approaches such as virtual service collaboration. By the 2025–26 school year, IASAS was distributing tournaments across several member campuses by sport. Jakarta, Manila, Singapore, Bangkok, Taipei, and Kuala Lumpur each hosted portions of the annual program. This multi-site approach retained the association's rotating-host principle while spreading facility demands and travel among the six schools.
- 2025
Multi-site 2025–26 event structure
[1]The 2025–26 calendar assigned different sports to multiple member-school hosts across Jakarta, Manila, Singapore, Bangkok, Taipei, and Kuala Lumpur.
- 2021
Service Conference moves online
[1]The IASAS Service Conference continued virtually from 2021, allowing member-school service groups to exchange information remotely.
- 2020
In-person competitions suspended
[1]IASAS stopped holding in-person events during the 2020–21 and 2021–22 academic years because of the COVID-19 pandemic.
- 2019
International School of Manila hosts Super IASAS
[1]International School of Manila hosted a Super IAS in fall 2019, bringing the first-season sports together at one location.
- 2016
IASAS Film Exchange begins
[1]The association's student film exchange began, creating a platform for selected films from member schools to circulate among participating institutions.
- 2013
Chess introduced as an experimental event
[1]Chess became an experimental IASAS activity.
- 2008
Leadership Convention discontinued
[1]The Leadership Convention was discontinued during the 2008–09 academic year as the association sought to limit travel for non-competitive activities.
- 2005
Leadership Convention begins documented run
[1]The student peer-helper Leadership Convention was held in 2005, followed by additional editions in 2006 and 2007.
Products and positioning
A member-school network that combines competitive interscholastic activities with international student exchange, cultural participation, leadership development, and community building.
Interscholastic athletics
IASAS Sports Program
The association's principal program is a three-season athletics calendar. It covers soccer, volleyball, cross country, basketball, rugby union, touch rugby, swimming, tennis, badminton, fastpitch softball, baseball, golf, and track and field. Main tournaments are supplemented by smaller exchanges during the season, and host schools rotate across the member network.
Arts and communication
IASAS Cultural Convention
The Cultural Convention brings together student delegations for music, dance, drama, visual art, theatre technology, speech, and debate. Music participation may include choir, strings, band, and piano, while speech categories include original oratory, oral interpretation, extemporaneous speaking, and impromptu speaking.
Civic education
IASAS Model United Nations
Model United Nations is a generally non-competitive conference held around November. It normally involves IASAS students and may invite additional schools, giving participants a structured setting for diplomacy, debate, and international-affairs simulation.
Student media · 2016
IASAS Film Exchange
The Film Exchange allows selected student films from member schools to be shown through the IASAS network. The program has operated since 2016 and later developed into an IASAS Film component, with participating student works receiving recognition at international film festivals.
Community service · 2021
IASAS Service Conference
The Service Conference connects service clubs and project leaders from the six schools. Since 2021 it has operated virtually, allowing students to present projects and exchange methods without requiring international travel.
Academic competition · 2013
IASAS Academic Activities
Academic activities include mathematics comparisons based on American Mathematics Contest results, with top AMC 12 scores used for varsity teams and top AMC 10 scores used for junior-varsity teams. Chess has been conducted as an experimental IASAS event since 2013.
Brand decisions
2025
Distribute tournaments across multiple host schoolsStrategyBackground
IASAS's rotating-host model required the association to coordinate facilities and travel across six geographically separated member schools.
Action taken
For the 2025–26 school year, different sports were assigned to different host campuses rather than being concentrated at one location per season.
Aftermath
The revised structure spread hosting responsibilities across Jakarta, Manila, Singapore, Bangkok, Taipei, and Kuala Lumpur.
2020
Suspend in-person events during the pandemicStrategyBackground
The COVID-19 pandemic disrupted international travel and in-person school activities.
Action taken
No in-person IASAS events were held during the 2020–21 and 2021–22 academic years.
Aftermath
The association later resumed physical events and retained virtual delivery for the Service Conference.
2008
Reduce travel for non-competitive programmingStrategyBackground
The association reviewed the travel burden associated with non-competitive student events after the Leadership Convention's 2005–07 run.
Action taken
The Leadership Convention was discontinued during the 2008–09 academic year.
Aftermath
IASAS continued to operate competitive sports and other cultural activities while reducing at least one travel-intensive leadership event.
Sources2 sources
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