Academic Calendar CIS 2025-26 Calendar First Day of School (Students) August 25, 2025Last Day of School (Students) June 09, 2026First Day of School (Teachers) August 19, 2025Last Day of School (Teachers) June 15, 2026End of 9 Weeks Reports Cards will go home five days after the end of the nine weeksOctober 23, 2025January 16, 2026March 19, 2026June 9, 2026Student Holidays,Annual Leave Days September 1,2025November 11, 2025November 27-28 , 2025December 22, 2025 thru January 2, 2026January 19, 2026April 6-10, 2026May 25, 2026
