St. Mark's International School Bangkok follows the northern hemisphere's school calendar.  One academic year comprises 2 semesters, with Semester 1 starting in August and finishing in December, while Semester 2 starting in January and finishing in June.  


There is a 4-week Summer School Program running from June to July of each academic year.     

2020 - 2021 School Calendar for Early Years and Primary


2021 - 2022 School Calendar for Secondary (ATAR)


2021 - 2022 School Calendar Primary and Kinder


2021 - 2022 School Calendar for Pre-Prep and Prep


2022 - 2023 School Calendar for Secondary (ATAR)