Johnson Elementary (Data source)
Source data for Johnson 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 | 2120453 | 2369 | - | 2436 | = | -67 | * | (112 | / | 316) | = | -23.74683539 | ||
| 4 | 2120456 | 2387 | - | 2485 | = | -98 | * | (94 | / | 316) | = | -29.15189869 | ||
| 5 | 2120457 | 2431 | - | 2528 | = | -97 | * | (110 | / | 316) | = | -33.76582271 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Johnson Elementary | -87 | ||||||||||||
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 | 65126 | 2356 | - | 2436 | = | -80 | * | (122 | / | 313) | = | -31.18210856 | ||
| 4 | 65129 | 2407 | - | 2485 | = | -78 | * | (100 | / | 313) | = | -24.92012773 | ||
| 5 | 65130 | 2428 | - | 2528 | = | -100 | * | (91 | / | 313) | = | -29.0734824 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Johnson Elementary | -85 | ||||||||||||
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 | 66943 | 2373 | - | 2436 | = | -63 | * | (104 | / | 331) | = | -19.79456189 | ||
| 4 | 66945 | 2396 | - | 2485 | = | -89 | * | (126 | / | 331) | = | -33.87915403 | ||
| 5 | 66946 | 2416 | - | 2528 | = | -112 | * | (101 | / | 331) | = | -34.17522651 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Johnson Elementary | -88 | ||||||||||||
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 | 67047 | 2366 | - | 2436 | = | -70 | * | (90 | / | 328) | = | -19.20731701 | ||
| 4 | 67048 | 2416 | - | 2485 | = | -69 | * | (109 | / | 328) | = | -22.92987804 | ||
| 5 | 67051 | 2426 | - | 2528 | = | -102 | * | (129 | / | 328) | = | -40.11585356 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Johnson Elementary | -82 | ||||||||||||
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 | 67543 | 2381 | - | 2436 | = | -55 | * | (109 | / | 316) | = | -18.97151894 | ||
| 4 | 67544 | 2418 | - | 2485 | = | -67 | * | (96 | / | 316) | = | -20.35443036 | ||
| 5 | 67545 | 2432 | - | 2528 | = | -96 | * | (111 | / | 316) | = | -33.72151891 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Johnson Elementary | -73 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -87 | -85 | -88 | -82 | -73 | -415.0 | -83.0 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -65.0
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -101.0
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 | 94% | 96% | 97% | 91% | 95% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Cajon Valley Union school district | County of San Diego
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.
Johnson Elementary math proficiency
Zero+ meets standard.
87% less $meal
93% less $meal
94% less $meal
85% less $meal
88% 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.