Montgomery Middle (Data source)
Source data for Montgomery Middle
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 | 2267113 | 2478 | - | 2552 | = | -74 | * | (160 | / | 465) | = | -25.46236555 | ||
| 7 | 2267116 | 2488 | - | 2567 | = | -79 | * | (146 | / | 465) | = | -24.80430103 | ||
| 8 | 2267117 | 2503 | - | 2586 | = | -83 | * | (159 | / | 465) | = | -28.38064509 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Montgomery Middle | -79 | ||||||||||||
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 | 69548 | 2494 | - | 2552 | = | -58 | * | (145 | / | 418) | = | -20.11961722 | ||
| 7 | 69549 | 2482 | - | 2567 | = | -85 | * | (140 | / | 418) | = | -28.46889947 | ||
| 8 | 69551 | 2529 | - | 2586 | = | -57 | * | (133 | / | 418) | = | -18.13636363 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Montgomery Middle | -67 | ||||||||||||
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 | 71381 | 2504 | - | 2552 | = | -48 | * | (153 | / | 429) | = | -17.11888109 | ||
| 7 | 71383 | 2487 | - | 2567 | = | -80 | * | (138 | / | 429) | = | -25.73426568 | ||
| 8 | 71385 | 2486 | - | 2586 | = | -100 | * | (138 | / | 429) | = | -32.1678321 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Montgomery Middle | -75 | ||||||||||||
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 | 71525 | 2465 | - | 2552 | = | -87 | * | (172 | / | 442) | = | -33.85520358 | ||
| 7 | 71527 | 2489 | - | 2567 | = | -78 | * | (137 | / | 442) | = | -24.17647058 | ||
| 8 | 71529 | 2501 | - | 2586 | = | -85 | * | (133 | / | 442) | = | -25.57692305 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Montgomery Middle | -84 | ||||||||||||
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 | 72011 | 2486 | - | 2552 | = | -66 | * | (119 | / | 421) | = | -18.65558191 | ||
| 7 | 72012 | 2488 | - | 2567 | = | -79 | * | (166 | / | 421) | = | -31.14964367 | ||
| 8 | 72013 | 2503 | - | 2586 | = | -83 | * | (136 | / | 421) | = | -26.81235154 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Montgomery Middle | -77 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -79 | -67 | -75 | -84 | -77 | -382.0 | -76.4 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -58.4
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -94.4
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 | 92% | 91% | 88% | 87% | 83% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
San Diego Unified 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.
Montgomery Middle math proficiency
Zero+ meets standard.
77% less $meal
79% less $meal
75% less $meal
75% less $meal
72% 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.