British System

• International General Certificate of Secondary Education (IGCSE), or General Certificate of Secondary Education (GCSE), or General Certificate of Education Ordinary Level (GCE O Level)
• Grade results A*-C on 5 different subjects + transcript
• General Certificate of Education Advanced Level (GCE A Level) with grade results A*-E on at least 3 different subjects + transcript

IB Diploma

• International Baccalaureate Diploma Programme (IBDP) or;
• International Baccalaureate Diploma or;
• IB Diploma Course Results (IBCR) 
• With not less than grade 3 on at least 5 different subjects

Note: Applicants must have completed or presently be enrolled in their final year of high school, or its equivalent levels according to the condition set by Chulalongkorn University.

Applicants must submit all of the following three required documents in which at least 2 out of 3 score results must meet the requirements.

2.1 One of the following English Proficiency Test Scores

• TOEFL (Paper-based) ⩾ 550 or
• TOEFL (Internet-based) ⩾ 79 or
• IELTS Academic ⩾ 6.0 or
• SAT (Evidence-Based Reading and Writing) ⩾ 500 or
• CU-TEP (Chulalongkorn University Test of English Proficiency)⩾ 80

2.2 One of the following Mathematics Test Scores:

• CU-AAT (Chulalongkorn University Academic Aptitude Test, Math Section)⩾ 450 or
• SAT (Math)⩾ 490 or
• SAT II (Subject Test) (Math Level 2)⩾ 600

2.3 One of the following Science Proficiency Test Scores:

• CU-ATS (Aptitude Test for Science of Chulalongkorn University, Chemistry)⩾ 380 or

• SAT II Subject Test (Chemistry)⩾ 560