Stewart Elementary (Data source)
Source data for Stewart 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 | 241034 | 2426 | - | 2436 | = | -10 | * | (46 | / | 323) | = | -1.4241486 | ||
| 4 | 241035 | 2450 | - | 2485 | = | -35 | * | (53 | / | 323) | = | -5.74303405 | ||
| 5 | 241038 | 2495 | - | 2528 | = | -33 | * | (60 | / | 323) | = | -6.13003093 | ||
| 6 | 241039 | 2506 | - | 2552 | = | -46 | * | (55 | / | 323) | = | -7.8328173 | ||
| 7 | 241042 | 2505 | - | 2567 | = | -62 | * | (52 | / | 323) | = | -9.98142414 | ||
| 8 | 241043 | 2510 | - | 2586 | = | -76 | * | (57 | / | 323) | = | -13.41176469 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Stewart Elementary | -45 | ||||||||||||
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 | 7068 | 2414 | - | 2436 | = | -22 | * | (43 | / | 314) | = | -3.01273885 | ||
| 4 | 7069 | 2462 | - | 2485 | = | -23 | * | (50 | / | 314) | = | -3.66242036 | ||
| 5 | 7071 | 2477 | - | 2528 | = | -51 | * | (52 | / | 314) | = | -8.44585985 | ||
| 6 | 7074 | 2502 | - | 2552 | = | -50 | * | (63 | / | 314) | = | -10.0318471 | ||
| 7 | 7075 | 2519 | - | 2567 | = | -48 | * | (56 | / | 314) | = | -8.56050955 | ||
| 8 | 7078 | 2503 | - | 2586 | = | -83 | * | (50 | / | 314) | = | -13.21656044 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Stewart Elementary | -47 | ||||||||||||
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 | 7280 | 2417 | - | 2436 | = | -19 | * | (44 | / | 291) | = | -2.87285223 | ||
| 4 | 7282 | 2443 | - | 2485 | = | -42 | * | (39 | / | 291) | = | -5.62886596 | ||
| 5 | 7284 | 2469 | - | 2528 | = | -59 | * | (49 | / | 291) | = | -9.93470786 | ||
| 6 | 7285 | 2479 | - | 2552 | = | -73 | * | (54 | / | 291) | = | -13.54639173 | ||
| 7 | 7287 | 2520 | - | 2567 | = | -47 | * | (58 | / | 291) | = | -9.36769756 | ||
| 8 | 7290 | 2514 | - | 2586 | = | -72 | * | (47 | / | 291) | = | -11.62886594 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Stewart Elementary | -53 | ||||||||||||
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 | 7298 | 2397 | - | 2436 | = | -39 | * | (56 | / | 311) | = | -7.02250801 | ||
| 4 | 7299 | 2448 | - | 2485 | = | -37 | * | (48 | / | 311) | = | -5.71061093 | ||
| 5 | 7302 | 2411 | - | 2528 | = | -117 | * | (55 | / | 311) | = | -20.69131826 | ||
| 6 | 7303 | 2492 | - | 2552 | = | -60 | * | (56 | / | 311) | = | -10.80385848 | ||
| 7 | 7306 | 2476 | - | 2567 | = | -91 | * | (44 | / | 311) | = | -12.87459801 | ||
| 8 | 7307 | 2502 | - | 2586 | = | -84 | * | (52 | / | 311) | = | -14.04501605 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Stewart Elementary | -71 | ||||||||||||
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 | 7350 | 2427 | - | 2436 | = | -9 | * | (58 | / | 312) | = | -1.67307692 | ||
| 4 | 7351 | 2445 | - | 2485 | = | -40 | * | (52 | / | 312) | = | -6.66666664 | ||
| 5 | 7352 | 2441 | - | 2528 | = | -87 | * | (50 | / | 312) | = | -13.94230767 | ||
| 6 | 7353 | 2457 | - | 2552 | = | -95 | * | (51 | / | 312) | = | -15.52884611 | ||
| 7 | 7354 | 2493 | - | 2567 | = | -74 | * | (56 | / | 312) | = | -13.28205125 | ||
| 8 | 7355 | 2498 | - | 2586 | = | -88 | * | (45 | / | 312) | = | -12.69230767 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Stewart Elementary | -64 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -45 | -47 | -53 | -71 | -64 | -280.0 | -56.0 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -23.0
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -89.0
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% | 43% | 38% | 47% | 44% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
West Contra Costa Unified school district | County of Contra Costa
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.
Stewart Elementary math proficiency
Zero+ meets standard.
35% less $meal
35% less $meal
29% less $meal
37% less $meal
37% 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.