Registration / Enrolment PeriodApril 2 - August 10
Start of ClassesAugust 13
Adding and Dropping of SubjectsAugust 13 - 31
Ninoy Aquino DayAugust 21
Last Day of Dropping of Subjects with RefundAugust 24
National Heroes DayAugust 27
Last Day of Dropping of Subjects w/ PermissionAugust 31
GC World Teachers' Day CelebrationOctober 2 - 4
Midterm ExaminationsOctober 8 - 14
Deadline of Submission of Midterm GradesOctober 26
Annual SportsfestOctober 29 - 31
All Saints' DayNovember 1
All Souls' DayNovember 2
Filing of Application for GraduationNovember 12 - 23
Bonifacio DayNovember 30
Final ExaminationsDecember 10 - 16
Submission of GradesDecember 20
Christmas BreakDec 21 - Jan 1
Additional Non-Working DayDecember 24
Christmas DayDecember 25
Rizal Day/Olongapo City FiestaDecember 30
Special Non-Working HolidayDecember 31
Releasing of GradesJanuary 2
Last Day of Application for Change of Grades with NFE/CFJanuary 16

Registration / Enrolment PeriodJanuary 2 - 16
Start of ClassesJanuary 21
Adding/Dropping of SubjectsJan 21 - Feb 1
Last Day of Dropping of Subjects with RefundFebruary 1
Last Day of Dropping of Subjects with PermissionFebruary 8
Chinese New Year's DayFebruary 5
19th Founding Anniversary CelebrationFebruary 2 - 23
Midterm ExaminationsMarch 18 - 24
Deadline for Submission of Midterm GradesApirl 5
Araw ng KagitinganApril 9
Maundy ThursdayApril 18
Good FridayApril 19
Labor DayMay 1
Final Examinations (Graduating Students)May 6 - 12
Submission of Grades (Graduating Students)May 16
Releasing of Grades (Graduating Students)May 20
Final Examinations (Non-Graduating Students)May 20 - 26
Commencement ExercisesMay 31
Submission of Grades (Non-Graduating Students)June 4
Releasing of GradesJune 5
Last Day of Application for Change of Grades of Students with NFE/CFJune 19

Registration / Enrolment PeriodJune 5 - 14
Independence DayJune 12
Start of ClassesJune 17
Midterm ExaminationsJuly 4-5
Final ExaminationsJuly 26-26
Submission of GradesJuly 29
Releasing of GradesJuly 31
Registration/Enrolment Period for 1st Semester
AY 2019-2020
April 1 - August 7

Start of ClassessJune 11
Independence DayJune 12
Student OrientationJune 13-14
Eid'l FitrJune 15
Club Meetings and ElectionsJuly 2-6
SSG Campaign and ElectionJuly 9-13
Midterm ExamsAugust 20-24
Ninoy Aquino DayAugust 21
Eid'l AdhaAugust 22
National Heroes DayAugust 27
SHS SportsfestSeptember 19-21
World Teachers' DayOctober 5
Final ExaminationOctober 22-26
Recognition and Distribution of Report CardsOctober 31

Registration / Enrolment PeriodJune 5 - 14
All Saints' DayNovember 1
All Souls' DayNovember 2
Start of ClassesNovember 5
Bonifacio DayNovember 20
End-Year Program/PartyDecember 21
Start of Christmas BreakDecember 22
Rizal Day
Olongapo City Fiesta
December 30
Resumption of ClassesJanuary 2
Midterm ExamsJanuary 14-18
Start of Early Application and Registration of Incoming Grade 11January 21
Chinese New Year's DayFebruary 5
GC Foundation WeekFebruary 20-22
SHS Grand Expo 2019February 25-28
Final Exams of Grade 12March 4-8
Final Exams of Grade 11March 21-25
Recognition and Distribution of Report Cards (Grade 11)April 4
Commencement ExercisesApril 8