Williams Elementary (Data source)
Source data for Williams 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 | 2713025 | 2528 | - | 2436 | = | 92 | * | (131 | / | 377) | = | 31.96816975 | ||
| 4 | 2713028 | 2568 | - | 2485 | = | 83 | * | (113 | / | 377) | = | 24.87798408 | ||
| 5 | 2713029 | 2612 | - | 2528 | = | 84 | * | (133 | / | 377) | = | 29.63395218 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Williams Elementary | 86 | ||||||||||||
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 | 82603 | 2521 | - | 2436 | = | 85 | * | (109 | / | 365) | = | 25.38356156 | ||
| 4 | 82605 | 2568 | - | 2485 | = | 83 | * | (132 | / | 365) | = | 30.01643831 | ||
| 5 | 82607 | 2623 | - | 2528 | = | 95 | * | (124 | / | 365) | = | 32.27397257 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Williams Elementary | 88 | ||||||||||||
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 | 84895 | 2541 | - | 2436 | = | 105 | * | (125 | / | 377) | = | 34.81432353 | ||
| 4 | 84896 | 2556 | - | 2485 | = | 71 | * | (115 | / | 377) | = | 21.65782488 | ||
| 5 | 84899 | 2607 | - | 2528 | = | 79 | * | (137 | / | 377) | = | 28.70822278 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Williams Elementary | 85 | ||||||||||||
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 | 85110 | 2530 | - | 2436 | = | 94 | * | (107 | / | 360) | = | 27.93888887 | ||
| 4 | 85112 | 2572 | - | 2485 | = | 87 | * | (130 | / | 360) | = | 31.41666666 | ||
| 5 | 85114 | 2597 | - | 2528 | = | 69 | * | (123 | / | 360) | = | 23.57499995 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Williams Elementary | 83 | ||||||||||||
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 | 85704 | 2528 | - | 2436 | = | 92 | * | (110 | / | 361) | = | 28.03324097 | ||
| 4 | 85705 | 2566 | - | 2485 | = | 81 | * | (115 | / | 361) | = | 25.80332404 | ||
| 5 | 85706 | 2611 | - | 2528 | = | 83 | * | (136 | / | 361) | = | 31.26869798 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Williams Elementary | 85 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| 86 | 88 | 85 | 83 | 85 | 427.0 | 85.4 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 88.4
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: 82.4
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 | 2% | 4% | 4% | 4% | 4% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
San Jose 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.
Williams Elementary math proficiency
Zero+ meets standard.
1% less $meal
4% less $meal
3% less $meal
4% less $meal
4% 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.