Los Osos High School

Public | 9-12 | 3262 students |  

PHONE: (909) 477-6900

FAX: (909) 460-5872

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6001 Milliken Ave.

Rancho Cucamonga, CA 91737

San Bernardino County | Map

Chaffey Joint Union High School District

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Los Osos High School, located in Rancho Cucamonga, California, serves grades 9-12 in the Chaffey Joint Union High School District. It is among the few public high schools in California to receive a distinguished GreatSchools Rating of 9 out of 10.

More than 70 school community members have shared their opinion about Los Osos High School, giving it an average Community Rating of 4 out of 5 stars.

Learn more about this school's teachers and students.

School highlights:

Academic contests; Band; Basketball
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Recent Reviews

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Read all 45 reviews
  • Principal leadership
  • Teacher quality
  • Parent involvement
Posted on Feb 29, 2012
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I'm currently a junior here, and I love the school, it's very nice and runs smooth. I love all the academic classes provided, and the teachers are great!
--Submitted by a student

Posted on Jan 25, 2012
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I love the new track that was put in and it has been useful for training year round. The teachers are great and I have a high academic workload which will get me into to USC at the end of the 2012 year. I have met good people here and enjoy the positive atmosphere with my friends around me. I'm looking forward to taking my SAT and this school rocks with the highest API scores in the SanBernardino and Riverside counties.
--Submitted by a student

Posted on Nov 9, 2011
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I really like this school because my daughter is highly motivated to excel and she hasn't been motivated for a few years. She is excited to go to school and do well. They accept all students who are gifted choose whether or not they want to take honors classes and will add them if necessary to help challenge them. I feel this is a great success! (Their cheeleaders can use a lot more work)
--Submitted by a parent

Posted on Jul 26, 2011
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We have a very committed principal at Los Osos High School. The teachers are very responsive and willing to work with you for the good of your children. This is a great school.
--Submitted by a parent

Posted on Apr 18, 2011
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Great School as long as you keep your child involved and focused on taking AP and Honors courses.
--Submitted by a parent

Posted on Sep 14, 2010
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Amazing school, amazing teachers, amazing athletics. Los Osos is ranked as one of the finest schools in United States By World News. It API test results prove that there is not finer school in the area. We feel very honored that our children are able to attend this school.
--Submitted by a parent

Posted on Feb 18, 2010
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Great school for acedemic acheivement. Athletic programs, band, drama, etc are all strong. The Alta Loma school district is the always rated strongest in the area. Because of the large amount of students, student talent is sometimes overlooked in order to support participation by many. Be aware that after school activities demand a large amount of your student's time and energy. Insure that they maintain an acedemic priority. Top 10 precent acedemic performance and a good SAT will result in scholarship offers Los Osos is well supported by parents and local community. it is a fairly new school that has wasted little time in placing itself at the top of the list in many areas.
--Submitted by a parent

Posted on Jan 16, 2010
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Los Osos has done very well for my son who will be off to USC this upcoming year. The area is also very nice and prestigious, making the schools student body very educated and relaxed.
--Submitted by a parent

Posted on Nov 22, 2009
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Great school but that's mainly because of the area. Super drama/theatre department and their productions are outstanding. Club kids dominant many of the sports because families can afford it.
--Submitted by a parent

Posted on Nov 11, 2009
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Los Osos is the number one school in the San Bernardino county, the speaks for itself. This school is like no other in the area. Los Osos also has a great variety of AP courses, which outnumber by far those of any other school.
--Submitted by a student


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