Jamacha Elementary (Data source)
Source data for Jamacha 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 | 2123903 | 2440 | - | 2436 | = | 4 | * | (81 | / | 261) | = | 1.24137931 | ||
| 4 | 2123904 | 2468 | - | 2485 | = | -17 | * | (99 | / | 261) | = | -6.44827585 | ||
| 5 | 2123907 | 2503 | - | 2528 | = | -25 | * | (81 | / | 261) | = | -7.75862068 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Jamacha Elementary | -13 | ||||||||||||
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 | 65222 | 2450 | - | 2436 | = | 14 | * | (77 | / | 247) | = | 4.36437246 | ||
| 4 | 65225 | 2471 | - | 2485 | = | -14 | * | (80 | / | 247) | = | -4.53441295 | ||
| 5 | 65226 | 2487 | - | 2528 | = | -41 | * | (90 | / | 247) | = | -14.93927123 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Jamacha Elementary | -15 | ||||||||||||
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 | 67038 | 2464 | - | 2436 | = | 28 | * | (79 | / | 228) | = | 9.70175438 | ||
| 4 | 67041 | 2469 | - | 2485 | = | -16 | * | (83 | / | 228) | = | -5.82456139 | ||
| 5 | 67043 | 2479 | - | 2528 | = | -49 | * | (66 | / | 228) | = | -14.18421052 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Jamacha Elementary | -10 | ||||||||||||
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 | 67142 | 2441 | - | 2436 | = | 5 | * | (76 | / | 224) | = | 1.69642857 | ||
| 4 | 67145 | 2488 | - | 2485 | = | 3 | * | (78 | / | 224) | = | 1.04464286 | ||
| 5 | 67146 | 2471 | - | 2528 | = | -57 | * | (70 | / | 224) | = | -17.8125 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Jamacha Elementary | -15 | ||||||||||||
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 | 67639 | 2452 | - | 2436 | = | 16 | * | (86 | / | 225) | = | 6.11555555 | ||
| 4 | 67640 | 2499 | - | 2485 | = | 14 | * | (72 | / | 225) | = | 4.48 | ||
| 5 | 67641 | 2493 | - | 2528 | = | -35 | * | (67 | / | 225) | = | -10.4222222 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Jamacha Elementary | 0 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -13 | -15 | -10 | -15 | 0 | -53.0 | -10.6 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -7.25
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -19.25
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 | 49% | 54% | 57% | 54% | 49% |
| 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.
Jamacha Elementary math proficiency
Zero+ meets standard.
38% less $meal
47% less $meal
47% less $meal
48% 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.