• KEY DATES - Spring 2019 (Link to Printable PDF)

    January 7                 First Day of Second Semester - Official schedules available at 6:45pm in M.P.R.                                                                           

    January 21                 Martin Luther King Jr. Holiday – No School

    January 24                 Minimum Day – 12:05 Dismissal

    January 26                 P.A.S.S.

    January 29                 Senior Assembly

     

    February 2                 Remembrance Walk - 9:00am to 11:00am - Stadium

    February 6                 Founders Night – 6:00pm - Library

    February 11              President’s Holiday – No School

    February 15              Sadie Hawkins Dance – Quad – 6:00pm to 10:00pm

    February 18              President’s Holiday – No School

    February 22              End of 4th Grading Period

    February 23              P.A.S.S.

     

    March 11                 Minimum Day – 12:05 Dismissal

    March 11                 C.O.H.S.  Open House/Preview Night

    March 15                 Night Rally (Date subject to change)

    March 21                 Bite of Reality – Seniors

    March 23                 P.A.S.S.          

    March 28                 Career Day

    March 29                 Club Food Court

                   

    April 1-5                  Spring Break – No School

    April 12                   End of 5th Grading Period

    April 13                   Prom at Sirona’s Santa Anita Race Track - 8pm to midnight

    April 20                   P.A.S.S.

    April 22-26              CAASPP Testing – Special Schedule

    April 26                   Unity Fair

     

    May 11                    P.A.S.S.

    May 15                    9-11 Underclass Awards – Multi-Purpose Room 6:00pm

    May 18                    P.A.S.S.

    May 20                    Senior Awards – 6:30pm – Luminate Church

    May 24                     Senior’s Last Day of Classes; Senior Clearance through Social Studies Classes

    May 27                    Memorial Day Holiday – No School

    May 28                    0 Period Final Exam Schedule

                                    10:30am – Senior Graduation Practice

    May 29                    Final Exam Schedule – Period 1 and 2; 12:15pm Dismissal

                                    9:30am – Senior Graduation Practice and Picture

    May 30                    Final Exam Schedule – Period 3 and 4; 12:15pm Dismissal

                                    Graduation – 5:00pm – Stadium

                                    Grad Nite – Magic Mountain

    May 31                    Final Exam Schedule – Period 5 and 6; 12:15pm Dismissal

    May 31                    Diploma Pick-Up

     

    Key Dates Fall 2018 (Link to Printable PDF)

    August 6 (Mon)           Grade 12 Registration – 8am – 12pm

    August 7 (Tues)           Grade 11 Registration – 8am – 12pm

    August 8 (Wed)           Grade 10 Registration - 8-11am / 12:30-2:30pm

    August 9 (Thurs)         Grade 9 Registration - 8-11am / 12:30-2:30pm

    August 10 (Fri)            Make-up Reg. All Grades – 8am – 12pm

    August 15 (Wed)         1st Semester Begins: “Official” class schedules available beginning at 6:45am in the Multi-Purpose Room (Cafeteria)

    August 22 (Wed)         Wednesday Late Start Schedule begins. We are on a special schedule each Wednesday to allow our teachers time for professional development and collaboration.  Zero period begins at 8:20am and 1st Period begins at 9:10am                               

    August 29 (Wed)         New Parent Meeting 5:15pm – Multi-Purpose Room (Cafeteria)

    August 29 (Wed)         Back to School Night 6:00pm - Multi-Purpose Room (Cafeteria)

     

    September 3 (Mon)     Labor Day Holiday – No School

    September 10 (Mon)   Non-Pupil Day – Staff Personal Development

    September 14 (Fri)      Elementary School Night/District Tailgate

    September 20(Thurs)  Minimum Day - Period 0 starts at 7:20am -- School dismissed at 12:05pm

    September 20 (Thurs) Night Rally

    September 28  (Fri)     End of the 1st grading period                

     

    October 4 (Thurs)       Parent Teacher Conferences/No School  – Parents pick up Progress Reports at

                                        Parent Conferences from 11:30am - 2:30pm & 4:30pm - 7:30pm

    October 12 (Fri)          Homecoming Game (Senior Night) – 7:00pm

    October 27 (Sat)         Homecoming Dance at Diamond Bar Community Center – 6pm-10pm

     

    November 1 (Thurs)    Minimum Day -- Period 0 starts at 7:20am -- School dismissed at 12:05pm

    November 9 (Fri)        End of 2nd grading period – Progress Reports go home with students next week

    November 12 (Mon)   Veteran’s Day Holiday Observed - No School

    November 19-23         Thanksgiving Week (Holiday) - No School

     

    December 7 (Fri)         COUSD Holiday Parade

    December 18 (Tues)    Special 0 period Final Exam Schedule (0 period 7:00am; 1st period 9:10am)

    December 19 (Wed)    Periods 1 and 2 Final Exam Schedule; School dismissed at 12:15pm

    December 20 (Thurs)  Periods 3 and 4 Final Exam Schedule; School dismissed at 12:15pm

    December 21 (Fri)       Periods 5 and 6 Final Exam Schedule; School dismissed at 12:15pm

     

    End of 1st Semester – Report Cards will be mailed home

     

    Dec 24 – Jan 4            Winter Break – No School

     

    Jan. 7, 2019 (Mon)     2nd Semester new “Official” class schedules available starting at 6:45am in the MPR