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Dear Mission Family:
Thank you for choosing Mission! At SGMHS we are more than a school, we are a family. This section includes general information to help manage your experience as a parent/guardian. If you have any questions please contact us at or call (626) 282-3181.



Parent Service hours are mandatory for parents on the Plan B Tuition plan. For questions regarding opportunties to complete your hours please contact Mrs. Sosa (Business Office Manager) at or call (626) 282-3181 x107


Students (and parents) should do all in their power to guard against absence from classes.  A Parent/Guardian (not the student) should notify the school Attendance Office on the day of the absence.  Messages may be left on voice mail 24 hours a day. 

To Report an Absence/Tardy:

  1. Call the Front Office to report the absence/tardy by 9am.
  2. State law requires a note signed by a parent/guardian for every absence.  This is due to the Front Office on the day of her return by 8am.

Same Day Early Dismissal:  Parents must send a note with your daughter to the Front Office by 8am.

Appointments: Verification is needed from a doctor, dentist, orthodontist, court, DMV, college appointments, etc. upon return to school. 


Front Office (626) 282-3181 ext. 102

At San Gabriel Mission High School we pride ourselves on communication and do all we can to be in touch with our families and keep them informed. Every week a phone call goes out with important announcements regarding school functions, reminders about upcoming events, and other school news. This phone call can be directed to any land line or cell phone; it can also be delivered via email. It is a great way to stay in contact with our families and help them be informed members of our community.

If you are not receiving our notification calls and emails please let us know at

Attending a school with a smaller student body allows better communication between teachers, parents, and students.  Our teachers are dedicated to ensuring that each student is receiving the attention they need.  To strengthen this communication, each of our faculty and staff members is provided with a school email they can use to contact parents and students.  Their email address can be found on their staff page.  
Parents are welcome to contact their daughters teacher to schedule a meeting or to discuss assignments and grades.
Students can contact their teachers outside of school hours via email or class apps.