Scott Lane Elementary (Data source)
Source data for Scott Lane 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 | 2723774 | 2379 | - | 2436 | = | -57 | * | (84 | / | 229) | = | -20.90829694 | ||
| 4 | 2723775 | 2403 | - | 2485 | = | -82 | * | (73 | / | 229) | = | -26.13973794 | ||
| 5 | 2723778 | 2434 | - | 2528 | = | -94 | * | (72 | / | 229) | = | -29.55458512 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Scott Lane Elementary | -77 | ||||||||||||
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 | 82862 | 2406 | - | 2436 | = | -30 | * | (76 | / | 228) | = | -9.99999999 | ||
| 4 | 82864 | 2432 | - | 2485 | = | -53 | * | (82 | / | 228) | = | -19.06140347 | ||
| 5 | 82866 | 2457 | - | 2528 | = | -71 | * | (70 | / | 228) | = | -21.79824555 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Scott Lane Elementary | -51 | ||||||||||||
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 | 85173 | 2425 | - | 2436 | = | -11 | * | (57 | / | 214) | = | -2.92990654 | ||
| 4 | 85175 | 2446 | - | 2485 | = | -39 | * | (76 | / | 214) | = | -13.85046725 | ||
| 5 | 85177 | 2445 | - | 2528 | = | -83 | * | (81 | / | 214) | = | -31.41588778 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Scott Lane Elementary | -48 | ||||||||||||
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 | 85390 | 2428 | - | 2436 | = | -8 | * | (53 | / | 186) | = | -2.27956989 | ||
| 4 | 85393 | 2445 | - | 2485 | = | -40 | * | (61 | / | 186) | = | -13.11827956 | ||
| 5 | 85394 | 2445 | - | 2528 | = | -83 | * | (72 | / | 186) | = | -32.12903224 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Scott Lane Elementary | -48 | ||||||||||||
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 | 85986 | 2417 | - | 2436 | = | -19 | * | (49 | / | 156) | = | -5.96794872 | ||
| 4 | 85987 | 2432 | - | 2485 | = | -53 | * | (50 | / | 156) | = | -16.98717946 | ||
| 5 | 85988 | 2467 | - | 2528 | = | -61 | * | (57 | / | 156) | = | -22.28846152 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Scott Lane Elementary | -45 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -77 | -51 | -48 | -48 | -45 | -269.0 | -53.8 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -14.8
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -92.8
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 | 84% | 78% | 78% | 84% | 77% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Santa Clara Unified school district | County of Santa Clara
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.
Scott Lane Elementary math proficiency
Zero+ meets standard.
73% less $meal
68% less $meal
61% less $meal
75% less $meal
66% 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.