Sylvia Cassell Elementary (Data source)
Source data for Sylvia Cassell 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 | 2620354 | 2406 | - | 2436 | = | -30 | * | (71 | / | 210) | = | -10.14285714 | ||
| 4 | 2620357 | 2431 | - | 2485 | = | -54 | * | (69 | / | 210) | = | -17.74285711 | ||
| 5 | 2620358 | 2473 | - | 2528 | = | -55 | * | (70 | / | 210) | = | -18.33333332 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Sylvia Cassell Elementary | -46 | ||||||||||||
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 | 79962 | 2426 | - | 2436 | = | -10 | * | (63 | / | 193) | = | -3.2642487 | ||
| 4 | 79963 | 2426 | - | 2485 | = | -59 | * | (64 | / | 193) | = | -19.5647668 | ||
| 5 | 79965 | 2459 | - | 2528 | = | -69 | * | (66 | / | 193) | = | -23.59585486 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Sylvia Cassell Elementary | -46 | ||||||||||||
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 | 82150 | 2411 | - | 2436 | = | -25 | * | (57 | / | 186) | = | -7.6612903 | ||
| 4 | 82153 | 2434 | - | 2485 | = | -51 | * | (64 | / | 186) | = | -17.54838707 | ||
| 5 | 82155 | 2428 | - | 2528 | = | -100 | * | (65 | / | 186) | = | -34.9462365 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Sylvia Cassell Elementary | -60 | ||||||||||||
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 | 82351 | 2437 | - | 2436 | = | 1 | * | (56 | / | 172) | = | 0.3255814 | ||
| 4 | 82354 | 2426 | - | 2485 | = | -59 | * | (55 | / | 172) | = | -18.86627902 | ||
| 5 | 82355 | 2452 | - | 2528 | = | -76 | * | (61 | / | 172) | = | -26.95348831 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Sylvia Cassell Elementary | -45 | ||||||||||||
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 | 82968 | 2417 | - | 2436 | = | -19 | * | (59 | / | 168) | = | -6.67261904 | ||
| 4 | 82969 | 2439 | - | 2485 | = | -46 | * | (54 | / | 168) | = | -14.78571427 | ||
| 5 | 82970 | 2441 | - | 2528 | = | -87 | * | (55 | / | 168) | = | -28.48214282 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Sylvia Cassell Elementary | -50 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -46 | -46 | -60 | -45 | -50 | -247.0 | -49.4 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -31.4
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -67.4
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 | 90% | 88% | 91% | 87% | 87% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Alum Rock Union Elementary 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.
Sylvia Cassell Elementary math proficiency
Zero+ meets standard.
75% less $meal
74% less $meal
76% less $meal
71% less $meal
70% 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.