Armstrong Elementary
22750 Beaverhead Drive
Diamond Bar, CA 91765

CSR Rank: 7 out of 102
Percentile:
(2016)
63.331-d
Compare to 2013 - Rank: 6, API Score: 820

2016 CAASPP Test Score Details:
GradeTest TypeMean ScoreExceeded
Standard
Met
Standard
Nearly Met
Standard
Standard
Not Met
3Math2431.7 14%32%40% 14%
3English2431.7 16%26%42% 16%
4Math2454.3 9%30%31% 30%
4English2461.1 13%24%39% 24%
5Math2517.5 25%27%29% 19%
5English2484.3 6%25%33% 35%
6Math2543.4 11%43%34% 11%
6English2519.3 8%23%49% 20%
- Asterisk "*", if present, indicates scores are not available (too few)
Calculated Percentiles from California School Ratings:
English Language Arts/Literacy Mathematics
GradePercentileStudents TestedPercentileStudents Tested
367.54%50 61.36%50
454.77%54 56.67%54
571.64%63 56.32%64
672.96%61 63.94%62
Weighted average for this school's Math and English test scores: 63.31%1-c
This school is in the 63.33th percentile1-d when compared to other schools of the same type: Elementary
Student Ethnicity:
Hispanic or Latino
 60.05%
White
 10.97%
Asian
 9.66%
African American
 7.57%
Filipino
 6.01%
Two or More Races
 4.96%
Not reported
 0.52%
Pacific Islander
 0.26%

Kindergarten Immunization Information:
(2014-15 School Year)
  • Up-to-date Immunizations: 97% (77)
  • Conditional admission: 1% (1)  6
  • Medical exemptions: 0% (0)
  • Personal Belief exemptions: 1% (1)
  • Religious Belief exemptions: 1% (1)

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