Cambridge Elementary (Data source)
Source data for Cambridge 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 | 1511567 | 2366 | - | 2436 | = | -70 | * | (67 | / | 289) | = | -16.2283737 | ||
| 4 | 1511570 | 2412 | - | 2485 | = | -73 | * | (78 | / | 289) | = | -19.70242209 | ||
| 5 | 1511571 | 2427 | - | 2528 | = | -101 | * | (64 | / | 289) | = | -22.36678199 | ||
| 6 | 1511574 | 2466 | - | 2552 | = | -86 | * | (80 | / | 289) | = | -23.80622829 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Cambridge Elementary | -82 | ||||||||||||
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 | 47371 | 2412 | - | 2436 | = | -24 | * | (74 | / | 281) | = | -6.32028468 | ||
| 4 | 47372 | 2410 | - | 2485 | = | -75 | * | (67 | / | 281) | = | -17.88256223 | ||
| 5 | 47375 | 2452 | - | 2528 | = | -76 | * | (74 | / | 281) | = | -20.01423482 | ||
| 6 | 47377 | 2459 | - | 2552 | = | -93 | * | (66 | / | 281) | = | -21.84341629 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Cambridge Elementary | -66 | ||||||||||||
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 | 48672 | 2394 | - | 2436 | = | -42 | * | (77 | / | 287) | = | -11.26829264 | ||
| 4 | 48675 | 2411 | - | 2485 | = | -74 | * | (68 | / | 287) | = | -17.53310098 | ||
| 5 | 48676 | 2438 | - | 2528 | = | -90 | * | (72 | / | 287) | = | -22.5783972 | ||
| 6 | 48678 | 2462 | - | 2552 | = | -90 | * | (70 | / | 287) | = | -21.95121951 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Cambridge Elementary | -73 | ||||||||||||
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 | 48685 | 2390 | - | 2436 | = | -46 | * | (61 | / | 284) | = | -9.88028167 | ||
| 4 | 48686 | 2402 | - | 2485 | = | -83 | * | (82 | / | 284) | = | -23.9647887 | ||
| 5 | 48689 | 2466 | - | 2528 | = | -62 | * | (68 | / | 284) | = | -14.84507038 | ||
| 6 | 48690 | 2419 | - | 2552 | = | -133 | * | (73 | / | 284) | = | -34.18661965 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Cambridge 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 | 48890 | 2346 | - | 2436 | = | -90 | * | (62 | / | 272) | = | -20.51470584 | ||
| 4 | 48891 | 2413 | - | 2485 | = | -72 | * | (64 | / | 272) | = | -16.94117642 | ||
| 5 | 48892 | 2433 | - | 2528 | = | -95 | * | (82 | / | 272) | = | -28.63970586 | ||
| 6 | 48893 | 2457 | - | 2552 | = | -95 | * | (64 | / | 272) | = | -22.35294112 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Cambridge Elementary | -88 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -82 | -66 | -73 | -83 | -88 | -392.0 | -78.4 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -54.4
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -102.4
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 | 80% | 79% | 75% | 79% | 81% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Orange Unified school district | County of Orange
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.
Cambridge Elementary math proficiency
Zero+ meets standard.
74% less $meal
70% less $meal
66% less $meal
74% less $meal
72% 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.