IMPORTANT DATES 2017   
1st SEMESTER
31 July 2017 New Teachers’ Orientation Day
1-4 August 2017 Teachers’ Orientation Week
7 August 2017 Students’ Orientation Day
8 August 2017 First Day of School
14 August 2017 School Closed – H.M. the Queen’s Birthday (National Holiday – Substitution Day)
14 September 2017 Wai Kru Ceremony
9-12 October 2017 Middle School & High School Midterm Exams
13 October 2017 King Bhumipol Memorial Day (National Holiday)
19-20 October 2017 Parent & Teacher Conferences: Midterm Report
21-29 October 2017 No Classes – Midterm Break
3 November 2017 Loy Kratong Ceremony
5 December 2017 School Closed – Father’s Day (National Holiday)
1-8 December 2017 Final Exams (Middle & High School)
11 December 2017 School Closed – Constitution Day (National Holiday – Substitution Day)
14 December 2017 Winter Carnival: NIS Charity Night
15 December 2017 No Classes – Teacher Work Day
16 December 2017 – 7 January 2018 No Classes – Winter Break
IMPORTANT DATES 2018   
2nd SEMESTER
8 January 2018 Classes Resume
3 February 2018 International Day
1 Mach 2018 School Closed – Makha Bucha Day (National Holiday)
26 February – 9 March 2018 Midterm Exams
15 – 16 March 2018 Parent & Teacher Conferences: Midterm Report
6 April 2018 School Closed – Chakri Memorial Day (National Holiday)
7-22 April 2018 No Classes – Songkran Midterm Break
21 – 30 May 2018 Final Exams
29 May 2018 School Closed – Visakha Bucha Day (National Holiday)
31 May 2018 Last Day of School (Minimum Day)
Kindergarten Graduation Ceremony (Morning)
Class of 2018  Graduation Ceremony (Evening)
1 June 2018 No Classes – Teacher Work Day