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Los Osos High School
24 Hour Attendance Line

(909) 460-5860

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The San Bernardino County Department of Public Health
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Patriot Day Activity

Patriot Day Activity

Hey LOHS....


The Chaffey Joint Union High School District has partnered with School Loop. School Loop is an innovative communication tool designed to keep parents, students, teachers and staff connected. With School Loop parents and students can:

  •  Check assignments online
  •  Monitor current grades
  •  Email teachers/counselors
  •  View school news/events
  •  Submit work electronically

Every Chaffey District parent and student is encouraged to register. It takes less than two minutes to sign up and all accounts are FREE! Click the 'Register Now' tab on the top left of this page.   


Apply Online for Meal Benefits

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Try a new and convenient way to apply for Free and Reduced Meal Benefits online. It's fast, easy and confidential. 

Final Exam Schedule

  5/20/2014 5/21/2014 5/22/2014
7:02-7:58am Period 0 Period 0 Period 0
8:05-10:05am Period 3 Period 1 Period 2
10:05-10:18am Break Break Break
10:25-12:25pm Period 5 Period 6 Period 4


2014 Graduation Ceremony

Thursday, May 22, 2014
6:00pm in the Grizzly Stadium
Gates open at 5:00pm

Tickets Required to Attend


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Dear Los Osos Parents and Students,

We hope that you were able to enjoy a relaxing and refreshing Spring Break and that you have returned ready to tackle one of the busiest times of the school year as we gear up to finish the year with final exams and graduation. Now is a perfect time to review with your student the progress made towards achieving their academic goals.  If you haven’t already done so, I encourage you to take this time to celebrate successes and revise plans to finish this school year strongly.

Spring ushers in our testing cycle that began with the California High School Exit Exam for sophomores in February and continues with the tenth grade Life Science exam to be taken Tuesday, April 15th. Also in April, our eleventh grade students will be taking two types of tests; EAP’s for English Language Arts/ Math to be taken on April 15th and 16th.  Our junior class will also take the Smarter Balanced exams (SBAC – computer based assessment) April 3-9. Please click the following link if you would like to learn more about the 2014 SBAC field test: bit.ly/1cL2IR1. Finally, exams will be administered May 5-16 for students enrolled in Advanced Placement (AP) courses who elect to take the exams.  

Please do not hesitate to contact your student’s teacher, counselor or me if you have questions or concerns regarding your child’s progress. Thank you for your continued support of Los Osos High School.

Grizzly regards,

Susan Petrocelli

Aeries.net Parent Portal Accounts Now Available!


The Chaffey Joint Union High School District is pleased to announce the Aeries.net Parent Portal. This new tool allows parents the opportunity to electronically update student information and complete the summer mailer online. This process is optional and ready now! Here’s how to get started:

  1. Complete the letter received by mail or download a copy here and return to the LOHS guidance office.
  2. You will be contacted by LOHS with your unique code needed to open your Aeries.net Parent Portal account.
  3. Download instructions here on how to create your Aeries.net Parent Portal Account.
  4. When the Summer Data Confirmation Window opens in Aeries.net you will be able to update your student information online instead of completing most documents included with the summer mailer. Click here to view a brief video on completing your summer data using Aeries.net.

Click the link below to connect to Aeries.net:

Los Osos High School - A California Distinguished School

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Dear Distinguished School Award Recipient,

Congratulations on successfully completing the 2013 California Distinguished School application process, and being recognized as one of our 218 California Middle and High Distinguished Schools! This award is a direct reflection of the dedication, hard work, and vision of your school’s educational community, and I am pleased to be able to award this honor to your school.

This year we will be recognizing the 2013 Distinguished Middle and High Schools along with the Exemplary Program Honors, the 2012 National Blue Ribbon Schools, and the 2013 Title I Academic Achievement Award Schools.

The news release identifying all the 2013 Distinguished Middle and High Schools is posted online at http://www.cde.ca.gov/ under What’s New.

Again, congratulations on receiving Distinguished School recognition. Please note that if you also applied for Exemplary Program honors, it will be announced very soon through a separate news release. If you have any questions regarding this subject, contact the Awards Team at 916-319-0842 or by e-mail at Awards@cde.ca.gov.


Tom Torlakson

Tutoring Opportunities

Week at a Glance

All Day: Spring Rally

Susan Petrocelli, Principal

Susan Petrocelli, Principal

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Los Osos News

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Order Your Official Transcript Online!

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The link above provides you with the ability to request transcripts through Secure Transcript. Transcripts requested online are sent securely to the colleges, universities, or scholarship funds that you select.

You may track your request online, and you will also receive an email notification when we approve your transcript request, and again when your transcript is mailed (or delivered electronically, based on the delivery preference of the destination that you select).
Download instructions here.

School Accountability Report Card

2012-2013 - English
2012-2013 - Spanish

A hard copy of our SARC Report is available in the main office.

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"We are what we repeatedly do.  Excellence, therefore, is not an act, but a habit."  --Aristotle