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 | 707074 | 2405 | - | 2436 | = | -31 | * | (54 | / | 233) | = | -7.18454934 | ||
| 4 | 707077 | 2452 | - | 2485 | = | -33 | * | (58 | / | 233) | = | -8.21459225 | ||
| 5 | 707078 | 2515 | - | 2528 | = | -13 | * | (64 | / | 233) | = | -3.57081544 | ||
| 6 | 707081 | 2552 | - | 2552 | = | 0 | * | (57 | / | 233) | = | 0.0 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Cerritos Elementary | -19 | ||||||||||||
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 | 22332 | 2392 | - | 2436 | = | -44 | * | (51 | / | 227) | = | -9.88546253 | ||
| 4 | 22334 | 2442 | - | 2485 | = | -43 | * | (57 | / | 227) | = | -10.7973568 | ||
| 5 | 22337 | 2497 | - | 2528 | = | -31 | * | (61 | / | 227) | = | -8.33039645 | ||
| 6 | 22339 | 2575 | - | 2552 | = | 23 | * | (58 | / | 227) | = | 5.87665196 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Cerritos Elementary | -23 | ||||||||||||
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 | 22764 | 2414 | - | 2436 | = | -22 | * | (51 | / | 212) | = | -5.29245281 | ||
| 4 | 22765 | 2427 | - | 2485 | = | -58 | * | (55 | / | 212) | = | -15.0471698 | ||
| 5 | 22767 | 2498 | - | 2528 | = | -30 | * | (48 | / | 212) | = | -6.79245282 | ||
| 6 | 22769 | 2543 | - | 2552 | = | -9 | * | (58 | / | 212) | = | -2.46226415 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Cerritos Elementary | -30 | ||||||||||||
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 | 22760 | 2430 | - | 2436 | = | -6 | * | (58 | / | 215) | = | -1.61860465 | ||
| 4 | 22762 | 2453 | - | 2485 | = | -32 | * | (58 | / | 215) | = | -8.63255811 | ||
| 5 | 22764 | 2468 | - | 2528 | = | -60 | * | (53 | / | 215) | = | -14.79069762 | ||
| 6 | 22766 | 2512 | - | 2552 | = | -40 | * | (46 | / | 215) | = | -8.55813952 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Cerritos Elementary | -34 | ||||||||||||
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 | 22943 | 2456 | - | 2436 | = | 20 | * | (62 | / | 233) | = | 5.3218884 | ||
| 4 | 22944 | 2481 | - | 2485 | = | -4 | * | (61 | / | 233) | = | -1.0472103 | ||
| 5 | 22945 | 2488 | - | 2528 | = | -40 | * | (60 | / | 233) | = | -10.30042916 | ||
| 6 | 22946 | 2509 | - | 2552 | = | -43 | * | (50 | / | 233) | = | -9.22746778 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Cerritos Elementary | -15 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -19 | -23 | -30 | -34 | -15 | -121.0 | -24.2 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -3.2
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -45.2
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 | 86% | 84% | 85% | 84% | 83% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Glendale 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.
76% less $meal
73% less $meal
74% less $meal
74% less $meal
74% 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.