William Tell Aggeler Opportunity High
21050 Plummer Street
Chatsworth, CA 91311

CSR Rank: 1 out of 102
Percentile:
(2016)
3.891-d
Compare to 2013 - Rank: None, API Score: 599

2016 CAASPP Test Score Details:
GradeTest TypeMean ScoreExceeded
Standard
Met
Standard
Nearly Met
Standard
Standard
Not Met
7Math* 0%0%0% 0%
7English* 0%0%0% 0%
8Math2391.8 0%0%0% 100%
8English2366.2 0%0%6% 94%
11Math2467.5 0%0%47% 53%
11English2415.5 0%0%7% 93%
- Asterisk "*", if present, indicates scores are not available (too few)
Calculated Percentiles from California School Ratings:
English Language Arts/Literacy Mathematics
GradePercentileStudents TestedPercentileStudents Tested
80.33%17 0.62%18
118.84%15 5.67%15
Weighted average for this school's Math and English test scores: 3.61%1-c
This school is in the 3.89th percentile1-d when compared to other schools of the same type: High School
SAT Test Results:
Average Reading ScoreN/A
Average Math ScoreN/A
Percent Tested0% (0 out of 26 seniors)
Dropouts:
GradeDropoutsEnrolment
803
96 (50%)12
1011 (73.33%)15
1117 (60.71%)28
1212 (46.15%)26
Student Ethnicity:
Hispanic or Latino
 88.04%
White
 7.61%
African American
 3.26%
Asian
 1.09%


Notes:
  1. California School Ratings (CSR) computes percentiles in this way:
    1. For a given grade level, all Math scores are put into an ordered list and a percentile is calculated for each score, based its position in the list.
    2. For a given grade level, all English scores are put into an ordered list and a percentile is calculated for each score, based its position in the list.
    3. Math and English percentiles from (a & b above) are weighted, based on the number of students who completed each type of test, to create a combined Math+English weighted percentile for each school.
    4. The combined Math+English weighted percentiles are put into an ordered list for the particular type of school (elementary/middle/high school/K-12) and a percentile-within-the-school-type is calculated.
    5. How percentiles work: the school percentile is a number between 0 and 100 that reflects the percentage of schools of the same type (elementary/middle/high school/K-12) in California that have an equal or lower combined Math+English weighted percentile (from 1-c above). For example, a school in the 70th percentile would have a combined weighted percentile that was equal to or better than 70% of the other schools of the same type.
  2. The CSR Rank is determined by a school's percentile in comparison to other schools of the same type in California (from 1-d above). (1 is the worst, 10 is the best). Schools in the 90th percentile and above have rank 10, 80%-89.999% rank 9 and so on. A similar number of schools occupy each rank. * This rank is derived from data in the 2016 California Assessment of Student Performance and Progress (CAASPP).
  3. Alternative Schools receive percentiles, but are not ranked
  4. More information: 2016 CAASPP Paper-based Test Results