Los Osos High School

6001 Milliken Ave, Rancho Cucamonga, CA 91737 | (909) 477-6900
  • Grades: 9-12
  • Student Enrollment: 3,262
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School Description

School Summary and Highlights
Additional Contact Information
  • Mailing Address: 6001 Milliken Ave., Rancho Cucamonga, CA 91737
School District Details

Faculty Details and Student Enrollment

Students and Faculty
  • Total Students Enrolled: 3,262
  • Total Full Time "Equivalent" Teachers: 117.0
  • Average Student-To-Teacher Ratio: 27.9
Students Gender Breakdown
  • Males: 1,646 (50.5%)
  • Females: 1,616 (49.5%)
Free Lunch Student Eligibility Breakdown
  • Eligible for Reduced Lunch: 125 (3.8%)
  • Eligible for Free Lunch: 308 (9.4%)
  • Eligible for Either Reduced or Free Lunch: 433 (13.3%)
Student Enrollment Distribution by Race / Ethnicity
Los Osos High School Student Race Distribution
  Number Percent
American Indian80.2%
Black35811.0%
Asian39512.1%
Hispanic98930.3%
White1,42443.7%
Number of Students Per Grade
Number of Students Per Grade For Los Osos High School
  Number Percent
9th Grade85326.1%
10th Grade83325.5%
11th Grade85526.2%
12th Grade72122.1%
Graduates Information (2010)
Graduation Rate
School:
95.2%
District:
82.2%
State:
78.6%
Teacher Education Background (2009)
Percent With Ph.D.
School:
2.2%
District:
8.3%
Percent With Master's Degree
School:
12.2%
District:
8.3%
Percent With Bachelor's Degree
School:
5.8%
District:
8.3%
Teacher Credentials & Experience (2009)
Percent of Teachers With Emergency Credentials: 0.8%
Percent of Teachers With Credentials: 99.2%
Number of Certificated Staff: 139.0
Average Number of Years of Teacher Experience: 14.0
Average Age
School:
41.7
District:
48.3
Source: CA Department of Education, Source: NCES 2009-2010

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Test Scores and Performance Information

Overall School Rating

Local School
Directory
Rating
How is this determined?
The overall school rating shows that Los Osos High School performed on average much better than most other schools across the state on CST state exams in the following subjects:
  • CST Algebra I
  • CST Algebra II
  • CST Biology
  • CST Chemistry
  • CST Earth Science
  • CST English-Language Arts
  • CST Geometry
  • CST Physics
  • CST Science
  • CST Summative High School Math
  • CST U.S. History
  • CST World History
AYP Results (2010)
Overall AYP Met: Yes
ELA AYP Met: Yes
Math AYP Met: Yes
ACT Exam Results (2009)
Percent of Students Taking ACT Exam: 19.6%
Average Combined Score: 22.9
Percent Scoring At or Above 21: 68.2%
SAT Exam Results (2009)
Percent of Students Taking SAT Exam: 50.6%
Average Combined Score: 1,538.2
Critical Reading Average: 503.6
Math Average: 529.8
Writing Average: 504.9
Percent Scoring At or Above 1500: 53.5%

CST - Test Proficiency by Grade and Subject

Grade 9 - % of students at or above proficiency

SchoolDistrictState
CST Algebra I Test
201044.0%29.0%22.0%
200937.0%25.0%21.0%
200839.0%20.0%18.0%
 
CST Biology Test
201097.0%77.0%55.0%
200997.0%74.0%51.0%
200892.0%77.0%52.0%
 
CST Earth Science Test
201049.0%40.0%35.0%
200947.0%34.0%29.0%
200848.0%36.0%31.0%
 
CST English-Language Arts Test
201077.0%56.0%54.0%
200972.0%51.0%50.0%
200873.0%49.0%49.0%
 
CST Geometry Test
201086.0%68.0%46.0%
200975.0%68.0%47.0%
200876.0%63.0%43.0%
 

Grade 10 - % of students at or above proficiency

SchoolDistrictState
CST Algebra I Test
201016.0%9.0%12.0%
200912.0%11.0%11.0%
200813.0%9.0%9.0%
 
CST Algebra II Test
201077.0%62.0%40.0%
200973.0%60.0%37.0%
200877.0%58.0%36.0%
 
CST Biology Test
201053.0%39.0%38.0%
200951.0%34.0%34.0%
200853.0%36.0%35.0%
 
CST Chemistry Test
201077.0%60.0%47.0%
200969.0%61.0%44.0%
200875.0%58.0%41.0%
 
CST English-Language Arts Test
201066.0%45.0%45.0%
200962.0%44.0%44.0%
200860.0%42.0%41.0%
 
CST Geometry Test
201043.0%17.0%14.0%
200938.0%16.0%14.0%
200842.0%15.0%12.0%
 
CST Science Test
201065.0%48.0%46.0%
200967.0%47.0%44.0%
200863.0%42.0%40.0%
 
CST Summative High School Math Test
2010100.0%79.0%75.0%
200992.0%84.0%71.0%
 
CST World History Test
201060.0%45.0%42.0%
200961.0%42.0%38.0%
200858.0%40.0%33.0%
 
CST Earth Science Test
200932.0%32.0%23.0%
200821.0%28.0%23.0%
 

Grade 11 - % of students at or above proficiency

SchoolDistrictState
CST Algebra I Test
20107.0%5.0%8.0%
20099.0%5.0%8.0%
20088.0%5.0%5.0%
 
CST Algebra II Test
201030.0%17.0%14.0%
200929.0%16.0%12.0%
200831.0%17.0%11.0%
 
CST Biology Test
201068.0%50.0%46.0%
200967.0%46.0%41.0%
200859.0%35.0%39.0%
 
CST Chemistry Test
201036.0%32.0%30.0%
200935.0%32.0%27.0%
200833.0%27.0%25.0%
 
CST Earth Science Test
201047.0%49.0%32.0%
200945.0%38.0%26.0%
200860.0%41.0%28.0%
 
CST English-Language Arts Test
201060.0%42.0%42.0%
200960.0%41.0%40.0%
200862.0%36.0%37.0%
 
CST Geometry Test
20109.0%5.0%6.0%
200912.0%6.0%7.0%
200813.0%5.0%6.0%
 
CST Physics Test
201081.0%59.0%53.0%
200970.0%51.0%50.0%
200884.0%56.0%47.0%
 
CST Summative High School Math Test
201064.0%59.0%50.0%
200960.0%55.0%47.0%
200859.0%44.0%43.0%
 
CST U.S. History Test
201067.0%50.0%45.0%
200965.0%49.0%44.0%
200867.0%42.0%38.0%
 

End of Course - % of students at or above proficiency

SchoolDistrictState
CST Algebra I Test
201036.0%21.0%31.0%
200929.0%19.0%28.0%
200827.0%15.0%25.0%
 
CST Algebra II Test
201052.0%35.0%31.0%
200954.0%33.0%28.0%
200854.0%35.0%27.0%
 
CST Biology Test
201065.0%45.0%46.0%
200963.0%41.0%42.0%
200865.0%41.0%42.0%
 
CST Chemistry Test
201052.0%41.0%38.0%
200951.0%41.0%36.0%
200846.0%35.0%32.0%
 
CST Earth Science Test
201048.0%41.0%33.0%
200947.0%35.0%28.0%
200850.0%36.0%28.0%
 
CST Geometry Test
201049.0%27.0%27.0%
200944.0%27.0%26.0%
200846.0%25.0%24.0%
 
CST Physics Test
201082.0%59.0%49.0%
200969.0%52.0%46.0%
200884.0%55.0%43.0%
 
CST Summative High School Math Test
201065.0%59.0%54.0%
200962.0%56.0%50.0%
200859.0%44.0%47.0%
 
CST World History Test
201060.0%45.0%41.0%
200961.0%41.0%38.0%
200857.0%39.0%33.0%
 
Source: CA Department of Education 2009-2010

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