Castle Rock Elementary
  2975 Castle Rock Road
  Diamond Bar, CA 91765
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- School Type: Elementary Schools (Public)
- District: Walnut Valley Unified
- Website: www.wvusd.k12.ca.us
- Grades: K-5
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2016 CAASPP Test Score Details:
| Grade | Test Type | Mean Score | Exceeded Standard | Met Standard | Nearly Met Standard | Standard Not Met | 
|---|---|---|---|---|---|---|
| 3 | English | 2468.8 | 39% | 29% | 21% | 10% | 
| 3 | Math | 2488.9 | 41% | 43% | 14% | 3% | 
| 4 | English | 2525.0 | 49% | 27% | 13% | 12% | 
| 4 | Math | 2535.6 | 45% | 32% | 18% | 5% | 
| 5 | English | 2564.4 | 44% | 36% | 13% | 8% | 
| 5 | Math | 2575.6 | 55% | 23% | 14% | 8% | 
- Asterisk "*", if present, indicates scores are not available (too few)
Calculated Percentiles from California School Ratings:
| English Language Arts/Literacy | Mathematics | |||
| Grade | Percentile | Students Tested | Percentile | Students Tested | 
| 3 | 87.33% | 109 | 92.91% | 111 | 
| 4 | 91.82% | 103 | 94.35% | 105 | 
| 5 | 91.6% | 103 | 95.59% | 105 | 
Weighted average for this school's Math and English test scores: 92.24%1-c
This school is in the 92.77th percentile1-d
when compared to other schools of the same type: Elementary
| Student Ethnicity: 
 Kindergarten Immunization Information: (2014-15 School Year) 
 
  Related Schools: Castle Rock Elementary rank: 10 in Diamond Bar Chaparral Middle rank: 10 in Diamond Bar Collegewood Elementary rank: 9 in Walnut Valley Cyrus J. Morris Elementary rank: 9 in Walnut Destiny Community Day rank: none in Walnut Diamond Bar High rank: 9 in Diamond Bar Evergreen Elementary rank: 10 in Diamond Bar Leonard G. Westhoff Elementary rank: 10 in Walnut Maple Hill Elementary rank: 9 in Diamond Bar Quail Summit Elementary rank: 10 in Diamond Bar Continuation Ron Hockwalt Academies  rank: 3 in Walnut South Pointe Middle rank: 10 in Walnut Suzanne Middle rank: 10 in Walnut Vejar Elementary rank: 9 in Walnut Walnut Elementary rank: 9 in Walnut Walnut High rank: 10 in Walnut Walnut Valley Adult rank: none in Walnut |  | 
  Notes:
  
- California School Ratings (CSR) computes percentiles in this way:
      - 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.
- 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.
- 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.
- 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.
- 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.
 
- 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).
- Alternative Schools receive percentiles, but are not ranked
- More information: 2016 CAASPP Paper-based Test Results
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