Sheldon Elementary (Data source)
Source data for Sheldon 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 | 240349 | 2429 | - | 2436 | = | -7 | * | (62 | / | 216) | = | -2.00925926 | ||
4 | 240352 | 2441 | - | 2485 | = | -44 | * | (58 | / | 216) | = | -11.81481479 | ||
5 | 240353 | 2434 | - | 2528 | = | -94 | * | (48 | / | 216) | = | -20.88888887 | ||
6 | 240356 | 2493 | - | 2552 | = | -59 | * | (48 | / | 216) | = | -13.1111111 | ||
Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Sheldon Elementary | -48 |
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 | 7048 | 2407 | - | 2436 | = | -29 | * | (52 | / | 218) | = | -6.91743119 | ||
4 | 7050 | 2432 | - | 2485 | = | -53 | * | (61 | / | 218) | = | -14.83027519 | ||
5 | 7052 | 2443 | - | 2528 | = | -85 | * | (60 | / | 218) | = | -23.39449535 | ||
6 | 7054 | 2477 | - | 2552 | = | -75 | * | (45 | / | 218) | = | -15.48165135 | ||
Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Sheldon Elementary | -61 |
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 | 7259 | 2421 | - | 2436 | = | -15 | * | (51 | / | 208) | = | -3.67788461 | ||
4 | 7261 | 2434 | - | 2485 | = | -51 | * | (42 | / | 208) | = | -10.29807688 | ||
5 | 7264 | 2410 | - | 2528 | = | -118 | * | (64 | / | 208) | = | -36.30769223 | ||
6 | 7266 | 2498 | - | 2552 | = | -54 | * | (51 | / | 208) | = | -13.24038458 | ||
Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Sheldon Elementary | -64 |
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 | 7277 | 2402 | - | 2436 | = | -34 | * | (48 | / | 203) | = | -8.03940883 | ||
4 | 7279 | 2437 | - | 2485 | = | -48 | * | (52 | / | 203) | = | -12.29556648 | ||
5 | 7281 | 2474 | - | 2528 | = | -54 | * | (40 | / | 203) | = | -10.64039404 | ||
6 | 7283 | 2461 | - | 2552 | = | -91 | * | (63 | / | 203) | = | -28.24137926 | ||
Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Sheldon Elementary | -59 |
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 | 7328 | 2411 | - | 2436 | = | -25 | * | (47 | / | 177) | = | -6.63841808 | ||
4 | 7329 | 2408 | - | 2485 | = | -77 | * | (39 | / | 177) | = | -16.96610169 | ||
5 | 7330 | 2466 | - | 2528 | = | -62 | * | (49 | / | 177) | = | -17.1638418 | ||
6 | 7331 | 2470 | - | 2552 | = | -82 | * | (42 | / | 177) | = | -19.45762707 | ||
Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Sheldon Elementary | -60 |
Last steps
Compute the average
2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
---|---|---|---|---|---|---|
-48 | -61 | -64 | -59 | -60 | -292.0 | -58.4 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -40.4
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -76.4
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 | 63% | 67% | 70% | 74% | 75% |
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.
Sheldon Elementary math proficiency
Zero+ meets standard.

54% less $meal

56% less $meal

58% less $meal

60% less $meal

63% 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.