ISB Middle School and Senior Choral Festival 02 October 2015 Add to Calendar 02/10/2015 03/10/2015 ISB Middle School and Senior Choral Festival true DD/MM/YYYY Discover more Whole School National Father's Day: School Closed 05 December 2019 Tanzania Day 09 December 2019 Constitution Day - School closed 10 December 2019 Christmas Holidays 16 December 2019