Sierra Preparatory Academy (Data source)
Source data for Sierra Preparatory Academy
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 |
||
| 6 | 1539300 | 2448 | - | 2552 | = | -104 | * | (330 | / | 976) | = | -35.16393442 | ||
| 7 | 1539301 | 2444 | - | 2567 | = | -123 | * | (310 | / | 976) | = | -39.06762285 | ||
| 8 | 1539304 | 2488 | - | 2586 | = | -98 | * | (336 | / | 976) | = | -33.73770491 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Sierra Preparatory Academy | -108 | ||||||||||||
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 |
||
| 6 | 48224 | 2446 | - | 2552 | = | -106 | * | (285 | / | 927) | = | -32.58899669 | ||
| 7 | 48226 | 2456 | - | 2567 | = | -111 | * | (320 | / | 927) | = | -38.31715205 | ||
| 8 | 48229 | 2463 | - | 2586 | = | -123 | * | (322 | / | 927) | = | -42.724919 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Sierra Preparatory Academy | -114 | ||||||||||||
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 |
||
| 6 | 49552 | 2446 | - | 2552 | = | -106 | * | (300 | / | 886) | = | -35.89164781 | ||
| 7 | 49555 | 2441 | - | 2567 | = | -126 | * | (284 | / | 886) | = | -40.38826176 | ||
| 8 | 49557 | 2468 | - | 2586 | = | -118 | * | (302 | / | 886) | = | -40.22121887 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Sierra Preparatory Academy | -117 | ||||||||||||
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 |
||
| 6 | 49566 | 2417 | - | 2552 | = | -135 | * | (217 | / | 780) | = | -37.55769228 | ||
| 7 | 49569 | 2449 | - | 2567 | = | -118 | * | (291 | / | 780) | = | -44.02307691 | ||
| 8 | 49570 | 2434 | - | 2586 | = | -152 | * | (272 | / | 780) | = | -53.0051281 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Sierra Preparatory Academy | -135 | ||||||||||||
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 |
||
| 6 | 49765 | 2415 | - | 2552 | = | -137 | * | (218 | / | 733) | = | -40.74488394 | ||
| 7 | 49766 | 2440 | - | 2567 | = | -127 | * | (225 | / | 733) | = | -38.98362892 | ||
| 8 | 49767 | 2461 | - | 2586 | = | -125 | * | (290 | / | 733) | = | -49.45429738 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Sierra Preparatory Academy | -129 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -108 | -114 | -117 | -135 | -129 | -603.0 | -120.6 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -87.6
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -153.6
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 | 96% | 97% | 96% | 95% | 93% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Santa Ana Unified school district | County of Orange
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.
Sierra Preparatory Academy math proficiency
Zero+ meets standard.
96% less $meal
97% less $meal
93% less $meal
89% less $meal
89% 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.