Cerritos Elementary (Data source)
Source data for Cerritos Elementary
2015
| Step 1 | Step 2 | Step 3 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Get Mean Scale Score from line numbers in this data file. | Subtract 'met min' Scale Score. from Mean Scale Score to get Distance From Standard | Multiply Distance From Standard by proportion of students in grade. | ||||||||||||
| Grade | Line number |
Mean Scale Score |
- | Scale Score: met min |
= | Distance from standard |
* | (Students tested in grade |
/ | Students) tested in school |
= | Weighted Distance From Standard |
||
| 3 | 610565 | 2495 | - | 2436 | = | 59 | * | (112 | / | 430) | = | 15.36744184 | ||
| 4 | 610566 | 2541 | - | 2485 | = | 56 | * | (114 | / | 430) | = | 14.84651162 | ||
| 5 | 610569 | 2552 | - | 2528 | = | 24 | * | (108 | / | 430) | = | 6.02790696 | ||
| 6 | 610570 | 2623 | - | 2552 | = | 71 | * | (96 | / | 430) | = | 15.85116272 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Cerritos Elementary | 52 | ||||||||||||
2016
| Step 1 | Step 2 | Step 3 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Get Mean Scale Score from line numbers in this data file. | Subtract 'met min' Scale Score. from Mean Scale Score to get Distance From Standard | Multiply Distance From Standard by proportion of students in grade. | ||||||||||||
| Grade | Line number |
Mean Scale Score |
- | Scale Score: met min |
= | Distance from standard |
* | (Students tested in grade |
/ | Students) tested in school |
= | Weighted Distance From Standard |
||
| 3 | 19555 | 2486 | - | 2436 | = | 50 | * | (102 | / | 443) | = | 11.5124153 | ||
| 4 | 19558 | 2548 | - | 2485 | = | 63 | * | (122 | / | 443) | = | 17.34988708 | ||
| 5 | 19560 | 2568 | - | 2528 | = | 40 | * | (113 | / | 443) | = | 10.20316024 | ||
| 6 | 19562 | 2602 | - | 2552 | = | 50 | * | (106 | / | 443) | = | 11.9638826 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Cerritos Elementary | 51 | ||||||||||||
2017
| Step 1 | Step 2 | Step 3 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Get Mean Scale Score from line numbers in this data file. | Subtract 'met min' Scale Score. from Mean Scale Score to get Distance From Standard | Multiply Distance From Standard by proportion of students in grade. | ||||||||||||
| Grade | Line number |
Mean Scale Score |
- | Scale Score: met min |
= | Distance from standard |
* | (Students tested in grade |
/ | Students) tested in school |
= | Weighted Distance From Standard |
||
| 3 | 19849 | 2490 | - | 2436 | = | 54 | * | (99 | / | 436) | = | 12.26146788 | ||
| 4 | 19852 | 2528 | - | 2485 | = | 43 | * | (102 | / | 436) | = | 10.05963302 | ||
| 5 | 19853 | 2571 | - | 2528 | = | 43 | * | (117 | / | 436) | = | 11.53899079 | ||
| 6 | 19855 | 2635 | - | 2552 | = | 83 | * | (118 | / | 436) | = | 22.46330268 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Cerritos Elementary | 56 | ||||||||||||
2018
| Step 1 | Step 2 | Step 3 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Get Mean Scale Score from line numbers in this data file. | Subtract 'met min' Scale Score. from Mean Scale Score to get Distance From Standard | Multiply Distance From Standard by proportion of students in grade. | ||||||||||||
| Grade | Line number |
Mean Scale Score |
- | Scale Score: met min |
= | Distance from standard |
* | (Students tested in grade |
/ | Students) tested in school |
= | Weighted Distance From Standard |
||
| 3 | 19848 | 2503 | - | 2436 | = | 67 | * | (79 | / | 409) | = | 12.94132028 | ||
| 4 | 19850 | 2535 | - | 2485 | = | 50 | * | (103 | / | 409) | = | 12.591687 | ||
| 5 | 19852 | 2555 | - | 2528 | = | 27 | * | (103 | / | 409) | = | 6.79951098 | ||
| 6 | 19854 | 2629 | - | 2552 | = | 77 | * | (124 | / | 409) | = | 23.34474327 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Cerritos Elementary | 56 | ||||||||||||
2019
| Step 1 | Step 2 | Step 3 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Get Mean Scale Score from line numbers in this data file. | Subtract 'met min' Scale Score. from Mean Scale Score to get Distance From Standard | Multiply Distance From Standard by proportion of students in grade. | ||||||||||||
| Grade | Line number |
Mean Scale Score |
- | Scale Score: met min |
= | Distance from standard |
* | (Students tested in grade |
/ | Students) tested in school |
= | Weighted Distance From Standard |
||
| 3 | 20033 | 2508 | - | 2436 | = | 72 | * | (84 | / | 383) | = | 15.79112266 | ||
| 4 | 20034 | 2551 | - | 2485 | = | 66 | * | (85 | / | 383) | = | 14.64751952 | ||
| 5 | 20035 | 2568 | - | 2528 | = | 40 | * | (110 | / | 383) | = | 11.48825064 | ||
| 6 | 20036 | 2616 | - | 2552 | = | 64 | * | (104 | / | 383) | = | 17.37859002 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Cerritos Elementary | 59 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| 52 | 51 | 56 | 56 | 59 | 274.0 | 54.8 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 63.8
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: 45.8
For the lines, you have the data necessary to plot the chart.
Very last step
The percent of students getting a Free or Reduced Price Meal comes from the following sources:
| 2015 | 2016 | 2017 | 2018 | 2019 | |
|---|---|---|---|---|---|
| Percent | 18% | 18% | 16% | 21% | 22% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
ABC Unified school district | County of Los Angeles
THIS chart shows what the school system "wants"
PLUS a "special" or "outside" cause of variation: wealth/poverty.
NOT what teachers want.
NOT what principals want.
NOT what parents want.
Cerritos Elementary math proficiency
Zero+ meets standard.
12% less $meal
12% less $meal
11% less $meal
16% less $meal
19% less $meal
• Any result above zero is proficient; below is not proficient. • There is a 99% chance that results will remain the same in coming years, which is to say, between the Upper and Lower Control Limits (the gray lines). • The houses with the % of students receiving a Free or Reduced Price Meal is a measure of wealth/poverty.