Lyceum International School

Lyceum International School (ලයිසියම් ජාත්‍යන්තර පාසල, லைசியம் சர்வதேச பாடசாலை), popularly known as Lyceum and its students as Lyceumers, is the largest International School network in Sri Lanka providing all pre-primary, primary and secondary education.

History
Lyceum International School was founded by Mohan Lal Grero in 1993. At its inception, Lyceum International School had only seven students and five teachers. The school's motto is derived from the Ancient Greek aphorism "Know thyself". Lyceum is made up of the parent school in Nugegoda and nine branch schools in Wattala, Panadura, Ratnapura, Gampaha, Nuwara Eliya, Anuradhapura, Kurunegala, Avissawella and Katunayake.

The Lyceum International Schools network currently has over 23,300 students and over 2,800 teachers as of 2023 March.

Branches
Lyceum International School has nine branches across Sri Lanka providing both primary and secondary education, and sixteen more branches providing pre-primary education commonly known as "leaf schools". Lyceum International School also has four daycare centres for toddlers.

Curriculum
Lyceum's senior school students sit for the Pearson Edexcel International Examinations for their Ordinary Levels and Advanced Level Examinations its examination body.

Since 2010, students are given the option of choosing between the Cambridge syllabus or the National syllabus in the English language, which gives them the opportunity to be eligible for higher education at public universities in Sri Lanka. In 2022, Cambridge syllabus was removed from the curriculum and was replaced by Pearson Edexcel syllabus.

Lyceum has consistently produced some of the island's best examination results, and its students have successfully been enrolled in the world's best universities.

Lyceum has launched the first phase of e-learning at the Lyceum Group along with the instigation of curfew, on the 16 March 2020.

Maathra
Maathra is an annual cultural dancing event produced and performed by Lyceum International School which was envisioned by school's founder, Mohan Lal Grero and administered by Kumari Grero in 2008. Under the guidance of Rasika Kothalawala, the Head of Cultural Dancing, around 600 performers hailing from Lyceum International School branches including Nugegoda, Panadura, Wattala, Ratnapura, Gampaha, Nuwara Eliya, and Kurunagala undergo training annually to showcase their talents at a significant event.

Maathra is considered as the Sri Lanka's biggest cultural dancing event of the year and usually takes place in October at BMICH or Nelum Pokuna Theatre. Distinguished chief guests includes Sri Lanka's president and the advisory council of the Lyceum International School.

Model United Nations Club
Lyceum is an annual participant of COMUN (Colombo Model United Nations) and SLMUN (Sri Lanka Model United Nations). The Lyceum delegation won the best school and best delegation award in the COMUN 2011 Conference along with several other awards and has also been runners up in most of the previous conferences. Lyceum International School Wattala Branch also has participated in COMUN 2012 Conference winning GA2 Best Delegate Award. Lyceum International School Nugegoda Branch annually Hosts LISMUN Conference.

Inter International Schools Athletic Championship (ISAC)
Inter International Schools Athletic Championship (ISAC) is the Sri Lanka's biggest school sporting annual event and Lyceum International School was the host for several years. Each year about 23 international schools are participating with over 2,000 athletes in over 100 live sporting events. Lyceum International School Wattala was the consecutive overall winner for over 5 years with the most medals count.

ISAC 2021 and 2022 was not held due to COVID-19. In the most recent ISAC event, the ISAC 2023 Lyceum International School was able to win 175 medals in total with 60	gold, 66 silver and 49 bronze medals.

Notable alumni

 * Sandalindu Dukgannarala, singer and son of Wasantha Dukgannarala.
 * Udith Lokubandara, politician and son of W. J. M. Lokubandara.
 * Amanda Ratnayake, businesswoman and beauty pageant titleholder who was crowned Miss Sri Lanka 2013.
 * Devnaka Porage, cinema and television actor.