Pomeroy Elementary (Data source)
Source data for Pomeroy 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 | 2723120 | 2414 | - | 2436 | = | -22 | * | (87 | / | 255) | = | -7.50588234 | ||
| 4 | 2723121 | 2456 | - | 2485 | = | -29 | * | (88 | / | 255) | = | -10.00784313 | ||
| 5 | 2723124 | 2470 | - | 2528 | = | -58 | * | (80 | / | 255) | = | -18.19607842 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Pomeroy Elementary | -36 | ||||||||||||
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 | 82846 | 2435 | - | 2436 | = | -1 | * | (75 | / | 240) | = | -0.3125 | ||
| 4 | 82848 | 2459 | - | 2485 | = | -26 | * | (81 | / | 240) | = | -8.775 | ||
| 5 | 82851 | 2475 | - | 2528 | = | -53 | * | (84 | / | 240) | = | -18.55 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Pomeroy Elementary | -28 | ||||||||||||
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 | 85156 | 2428 | - | 2436 | = | -8 | * | (67 | / | 217) | = | -2.47004608 | ||
| 4 | 85158 | 2478 | - | 2485 | = | -7 | * | (72 | / | 217) | = | -2.32258065 | ||
| 5 | 85161 | 2475 | - | 2528 | = | -53 | * | (78 | / | 217) | = | -19.05069121 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Pomeroy Elementary | -24 | ||||||||||||
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 | 85374 | 2413 | - | 2436 | = | -23 | * | (57 | / | 204) | = | -6.42647057 | ||
| 4 | 85377 | 2445 | - | 2485 | = | -40 | * | (66 | / | 204) | = | -12.94117644 | ||
| 5 | 85378 | 2453 | - | 2528 | = | -75 | * | (81 | / | 204) | = | -29.77941173 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Pomeroy Elementary | -49 | ||||||||||||
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 | 85970 | 2407 | - | 2436 | = | -29 | * | (66 | / | 192) | = | -9.96875 | ||
| 4 | 85971 | 2442 | - | 2485 | = | -43 | * | (57 | / | 192) | = | -12.765625 | ||
| 5 | 85972 | 2456 | - | 2528 | = | -72 | * | (69 | / | 192) | = | -25.875 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Pomeroy Elementary | -49 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -36 | -28 | -24 | -49 | -49 | -186.0 | -37.2 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -4.2
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -70.2
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 | 44% | 41% | 43% | 49% | 42% |
| 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.
Pomeroy Elementary math proficiency
Zero+ meets standard.
37% less $meal
33% less $meal
31% less $meal
41% less $meal
36% 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.