BELTEI, a private educational school, was founded on January 01, 2002 at a plot Nº 77, Street 125, Sangkat Veal Vong, Khan 7 Makara, Phnom Penh city and it was the first BELTEI International School. BELTEI International   School  is  fully  named  in  Khmer  “សា​លា ​ប៊ែល​ធី ​អន្តរ​ជាតិ” and in English “BELTEI INTERNATIONAL SCHOOL”. BELTEI is an acronym consisting of six major subjects: Business, Economics, Law, Tourism, English, and Information Technology.
H.E. Dr. Ly Chheng is a former Director of Chheng Hear Institute and an advisor to the Council of Ministers and at the present, a member of parliament for Phnom Penh Capital, the Director-General of BELTEI Group and the Preisent of BELTEI International University. He is the only founder building the schools with hundreds of thousands of dollar with the aim of partly fostering human resources with the Royal Government, led by Samdech Akka Moha Sena Padei Techo Hun Sen. He invests his own money in the education sector to help alleviate the poverty in Cambodia, which gives the name “Chheng Hear Institute”. Chheng Hear ran general education, English language, as well as computer skills, . Chheng Hear did not go well, because the Chinese language, the major subject, then was slightly needed, so the management team unanimously changed the name Chheng Hear Institute to BELTEI International Institute. Regarding to the our rapid development, BELTEI International University was established in accordance with the Royal Government Sub-degree Nº 138 issued on September 06, 2012 stating about the transformation of BELTEI International Institute to BELTEI International University. Therefore, BETLEI International Institute was transformed to BELTEI International School.
The school has  5 main programs:
1. General Education (Grade 1 to Grade 12): This program is de-signed and conducted in accordance with the Ministry of Education Youth and Sports' (MoEYS) curriculum and syllabus. In addition to this, we also provide English and Computer classes to our students.
2. ESL Program (Preschool to Level 12): This is an American system. Students in level 12 (High Advanced Level) are eligible for two kinds of certificates which are issued by BELTEI Head Office, and International Institution (TOEFL or IELTS).
3. Skills Training Programs: Which train on two skills: Teaching Methodology and Admin and Business Letter Writing Skill.
4. Computer Training Courses: There are 12 different courses, which are designed and conducted in accordance with the new program version (Microsoft Office 2010).      
5. International Test Preparation Courses (TOEFL & IELTS)
BELTEI International School was authorized and granted a license to run the two main official International Test Centers from ETS Authorized TOEFL iBT Center and Authorized IELTS Test Center.
As mentioned above, the management team of BELTEI unanimously approved and organized “BELTEI Standard” for all BELTEI campuses in order to carry out the same principle, which chose the same day for the Monthly Test, Midterm Test, and Semester Exam. The internal rules, directives, norms, the opening day of General Education, terms for ESL, school fees, document in grade or level and the leading principles are determined by the BELTEI management.
BELTEI International School has expanded itself from one campus to nineteen campuses with 7 to 9 stories and basements used for parking. All the campuses are owned and built by BELTEI Construction Company of BELTEI Group.

is located at 77, Street 125, Sangkat Veal Vong, Khan 7 Makara, Phnom Penh and was officially opened on January 01, 2002 and presided over by Mr. Oum Hoeung, Director of Phnom Penh Municipal Department of Education, Youth and Sport. It is a five-story building with 41 rooms , which was built by BELTEI Construction Company of BELTEI Group and belogs to BELTEI.

is located at No 34, Street 431, Sangkat Tuol Tumpoung 1, Khan Chamkamon, Phnom Penh and is the new campus which was totally moved from the old Campus (Mao Tse Toung) located at 189, Mao Tse Toung Boulevard, Sangkat Tuol Svay Prey I, Khan Chamkamon, Phnom Penh. It was opened on May 15, 2004, but it was completely closed on August 30, 2007 because the leasing contract was due. BELTEI Campus 2 (Phsa Tuol Tumpoung) is a reinforced concrete and seven-story building with convenient parking lots in the basement and has more than 50 rooms and it belongs to BELTEI and it is scheduled to open on May 02, 2011.

is located at 7A, Street 215, Sangkat Phsa Depo III, Khan Tuol Kok, Phnom Penh. It was inaugurated on April 20, 2005 and presided over by His Excellency Mob Sarin, Deputy Governor of Phnom Penh Municipality. It is a reinforced concrete and five-story building with 32 rooms and it belongs to BELTEI.

is located at 54, Street 488, Sangkat Phsar Deum Thkov, Khan Chamka Mon, Phnom Penh. It was opened on August 03, 2006, and highly presided over by His Excellency Kep Chutema, Phnom Penh Municipal Governor. It is a reinforced concrete and six-story building with 45 rooms, which was built by BELTEI Construction Company of BELTEI Group and belogs to BELTEI.

is situated at 36, National Road 1, Sangkat Chba Ampov I, Khan Mean Chey, Phnom Penh. It was inaugurated on August 02, 2007 and presided over by His Excellency Mob Sarin, Deputy Phnom Penh Municipal Governor. It is a reinforced concrete and six-story building with convenient parking lots in the basement and has 55 rooms, which was built by BELTEI Construction Company of BELTEI Group and belogs to BELTEI.

Head Office, is located at 25A, Street 105, Sangkat Beung Prolit, Khan 7 Makara, Phnom Penh. It was opened on June 03, 2008 and highly presided over by His Excellency Kep Chutema, Phnom Penh Municipal Governor. It is a reinforced concrete and seven-story building with 63 rooms, which was built by BELTEI Construction Company of BELTEI Group and belogs to BELTEI.

is located at 96, Corner of Street 160 and 265, Sangkat Teuk Laak II, Khan Tuol Kok, Phnom Penh. It was opened on October 13, 2008 and highly presided over by H.E. Ly Chheng, Advisor to the Council of Ministers, Director-General of BELTEI Group Co.,Ltd and Director of BELTEI International Institute. It is a reinforced concrete and seven-story building with convenient parking lots in the basement and has 65 rooms, which was built by BELTEI Construction Company of BELTEI Group and belogs to BELTEI.

is located at 123, Russian Federation Blvd, Sangkat Kakab, Khan Dangkor, Phnom Penh. It was opened on May 18, 2009 and highly presided over by H.E. Ly Chheng, Advisor to the Council of Ministers, Director-General of BELTEI Group Co.,Ltd and Director of BELTEI International Institute. It is a reinforced concrete and four-story building with 50 rooms, which was built by BELTEI Construction Company of BELTEI Group and belogs to BELTEI.

is located at 3032, Corner of Veng Sreng Street and 217 Sangkat Steung Meanchey, Khan Meanchey, Phnom Penh. It was opened on March 11, 2010 and highly presided over by H.E. Ly Chheng, Advisor to the Council of Ministers, Director-General of BELTEI Group Co., Ltd and Director of BELTEI International Institute. It is a reinforced concrete and seven-story building with convenient parking lots in the basement and has 135 rooms, which is being built by BELTEI Construction Company of BELTEI Group and belogs to BELTEI.

is located at 57, Corner of Street 217 and 290, Sangkat Tuol Svay Prey II, Khan Chamkamon, Phnom Penh. It was opened on September 13, 2010 and highly presided over by H.E. Ly Chheng, Advisor to the Council of Ministers and Director-General of BELTEI Group Co., Ltd. It is a reinforced concrete and seven-story building with convenient parking lots in the basement and has 55 rooms, which is being built by BELTEI Construction Company of BELTEI Group and belogs to BELTEI.

is located at #1796 National Road 5,Phsa Toch Village, Sangkat Tuol Sangke,Khan Russey Keo, Phnom Penh. It was opened on September 1, 2011 and highly presided over by H.E. Ly Chheng, Advisor to the Council of Ministers and Director-General of BELTEI Group Co., Ltd. It is a reinforced concrete and seven-story building with convenient parking lots in the basement and has 55 rooms, which is being built by BELTEI Construction Company of BELTEI Group and belogs to BELTEI.

It is located at the building Nº 2258, Hanoi Street (1019), Sangkat Teuk Thla, Khan Sen Sok, Phnom Penh city. It was opened on July 18, 2013 and highly presided over by H.E. Ly Chheng, Advisor to the Council of Ministers and Director-General of BELTEI Group Co., Ltd. It is a reinforced concrete and seven-story building with convenient parking lots in the basement and has 81 rooms, which is being built by BELTEI Construction Company of BELTEI Group and belogs to BELTEI.

It is located at the building Nº 163, Corner of Street 528 and 353, Sangkat Boeung Kak 1, Khan Tuol Kork, Phnom Penh city. It was inaugurated on December 02, 2013 and highly presided over by H.E. LY Chheng, and President of BELTEI International Universityand Lork Chumteav. It is a seven-storey reinforced concrete building with 60 rooms and basement for parking, which was built by BELTEI Construction Company of BELTEI Group, and it belongs to BELTEI.

It is located at the building Nº 786, National Road Nº 2, Kropeu Ha Village, Sangkat Prek Russey, Takhmao Town, Kandal Province. It was inaugurated on May 04, 2015 and highly presided over by H.E. LY Chheng, and President of BELTEI International Universityand Lork Chumteav. It is a reinforced concrete with seven-storey building with 70 rooms and basement for parking, which was built by BELTEI Construction Company of BELTEI Group, and it belongs to BELTEI.

It is located at the building Nº 119A, National Road Nº 4, Chumpu Vorn Village, Sangkat Chaom Chao, Khan Posenchey, Phnom Penh city. It was inaugurated on September 07, 2015 and highly presided over by H.E. LY Chheng, and President of BELTEI International Universityand Lork Chumteav. It is a  five-storey reinforced concrete  building with 65 rooms and basement for parking, which was built by BELTEI Construction Company of BELTEI Group, and it belongs to BELTEI.

It is located at the building Nº 77A, Veng Sreng Street, Chrey Koang Village, Sangkat Chaom Chao, Khan Posenchey, Phnom Penh city. It was inaugurated on May 30, 2016 and highly presided over by H.E. LY Chheng, and President of BELTEI International Universityand Lork Chumteav. It is a four-storey reinforced concrete building with 82 rooms and basement for parking, which was built by BELTEI Construction Company of BELTEI Group, and it belongs to BELTEI.

It is located at the building Road Nº 5, Sangkat Svay Pak, Khan Russey Keo, Phnom Penh city. It was inaugurated on July 27, 2017 and highly presided over by H.E. LY Chheng, and President of BELTEI International Universityand Lork Chumteav. It is a seven-storey reinforced concrete building with 70 rooms and basement for parking, which was built by BELTEI Construction Company of BELTEI Group, and it belongs to BELTEI.

It is located at the National Road Nº 1, Preak Cheang Prom Village, Sangkat Veal Sbov, Khan Chbar Ampov, Phnom Penh City. It is scheduled to open in 2017.

It is located at the National Road Nº 1, Prek Cheang Prom Village, Sangkat Veal Sbov, Khan Chbar Ampov, Phnom Penh city. It was inaugurated on March 29, 2018 and highly presided over by H.E. Dr. LY Chheng, Director-General of BELTEI Group and the President of BELTEI International University. It is a four-storey reinforced concrete building with 72 rooms and a basement for parking.

It is located at the National Road Nº3, Sangkat Cham Chao3, Khan Porsenchey, Phnom Penh. It was inaugurated on March 04, 2019 and highly presided over by H.E. Dr. LY Chheng, a Member if the National Assembly for Phnom Penh Capital City, Founder and the Director-General of BELTEI Group and the President of BELTEI International University. It is a five-storey reinforced concrete building with 75 rooms and a basement for parking.

It is located at Street Okha Triheng (2011), Kok Kleang Village, Sangkat Kok Kleang, Khan Sen Sok, Phnom Penh. It was inaugurated on September 03, 2020 and highly presided over by H.E. Dr. LY Chheng, a Member if the National Assembly for Phnom Penh Capital City, Founder and the Director-General of BELTEI Group and the President of BELTEI International University. It is a nine-storey reinforced concrete building with 115 rooms and a basement for parking.

It is located at National Road N2, Krang Svay village, Sangkat Prek Kompue, Khan Dangkor, Phnom Penh. It was inaugurated on August 30, 2021 and highly presided over by H.E. Dr. LY Chheng, a Member if the National Assembly for Phnom Penh Capital City, Founder and the Director-General of BELTEI Group and the President of BELTEI International University. It is a nine-storey reinforced concrete building with 156 rooms and a basement for parking.

It is located at Phum Brakar sangkat Prey Sar, Khan Dangkor, Phnom Penh. It was inaugurated on August 29, 2022 and highly presided over by H.E. Dr. Ly Chheng, a Member of the National Assembly for Phnom Penh Capital City, Founder and the Director-General of BELTEI Group and the Chairman of the Board of Directors of BELTEI International University. It is nine storey reinforced concrete building with 179 rooms and a basement for parking.

It is located at Phum Ta Meak, Khum Prek Ta Meak, Khsach Kandal District, Kandal Province. It was inaugurated on September 05, 2022 and highly presided over by H.E. Dr. Ly Chheng, a Member of the National Assembly for Phnom Penh Capital City, Founder and the Director-General of BELTEI Group and the Chairman of the Board of Directors of BELTEI International University. It is nine storey reinforced concrete building with 173 rooms and a basement for parking.

“BELTEI International School Campus 25, Pumping Station 371) is opening soon!” Presiding over the groundbreaking ceremony of BELTEI International School Campus 25 (Pumping Station 371), located nearby the Beoung Tompun Pumping Station, Street 371, Tnot Chhrum 3 Village, Sangkhat Beoung Tompun, Khan Mean Chhey, Phnom Penh on Thursday Morning of October 6, 2022.

“BELTEI International School Campus 26, (Preaek Pra) is opening soon!” Presiding over the groundbreaking ceremony of BELTEI International School Campus 26 (Preaek Pra), located at Street 369, Sangkat Preaek Pra, Khan Chbar Ampov, Phnom Penh, on Thursday Morning of December 1, 2022.