Spanos (Alex G.) Elementary (Data source)
Source data for Spanos (Alex G.) 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 | 2447888 | 2357 | - | 2436 | = | -79 | * | (64 | / | 315) | = | -16.05079364 | ||
| 4 | 2447891 | 2414 | - | 2485 | = | -71 | * | (63 | / | 315) | = | -14.2 | ||
| 5 | 2447892 | 2452 | - | 2528 | = | -76 | * | (65 | / | 315) | = | -15.68253966 | ||
| 6 | 2447895 | 2450 | - | 2552 | = | -102 | * | (61 | / | 315) | = | -19.75238089 | ||
| 7 | 2447896 | 2493 | - | 2567 | = | -74 | * | (32 | / | 315) | = | -7.51746027 | ||
| 8 | 2447899 | 2483 | - | 2586 | = | -103 | * | (30 | / | 315) | = | -9.80952379 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Spanos (Alex G.) Elementary | -83 | ||||||||||||
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 | 74688 | 2405 | - | 2436 | = | -31 | * | (62 | / | 315) | = | -6.10158728 | ||
| 4 | 74690 | 2425 | - | 2485 | = | -60 | * | (64 | / | 315) | = | -12.19047618 | ||
| 5 | 74691 | 2425 | - | 2528 | = | -103 | * | (63 | / | 315) | = | -20.6 | ||
| 6 | 74693 | 2469 | - | 2552 | = | -83 | * | (63 | / | 315) | = | -16.6 | ||
| 7 | 74696 | 2487 | - | 2567 | = | -80 | * | (31 | / | 315) | = | -7.87301584 | ||
| 8 | 74697 | 2486 | - | 2586 | = | -100 | * | (32 | / | 315) | = | -10.1587301 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Spanos (Alex G.) Elementary | -74 | ||||||||||||
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 | 76673 | 2395 | - | 2436 | = | -41 | * | (59 | / | 310) | = | -7.80322578 | ||
| 4 | 76674 | 2457 | - | 2485 | = | -28 | * | (65 | / | 310) | = | -5.87096773 | ||
| 5 | 76677 | 2445 | - | 2528 | = | -83 | * | (63 | / | 310) | = | -16.8677419 | ||
| 6 | 76678 | 2443 | - | 2552 | = | -109 | * | (62 | / | 310) | = | -21.8 | ||
| 7 | 76681 | 2545 | - | 2567 | = | -22 | * | (31 | / | 310) | = | -2.2 | ||
| 8 | 76683 | 2499 | - | 2586 | = | -87 | * | (30 | / | 310) | = | -8.41935479 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Spanos (Alex G.) Elementary | -63 | ||||||||||||
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 | 76855 | 2396 | - | 2436 | = | -40 | * | (45 | / | 294) | = | -6.12244896 | ||
| 4 | 76858 | 2436 | - | 2485 | = | -49 | * | (61 | / | 294) | = | -10.16666666 | ||
| 5 | 76860 | 2443 | - | 2528 | = | -85 | * | (64 | / | 294) | = | -18.50340129 | ||
| 6 | 76862 | 2494 | - | 2552 | = | -58 | * | (64 | / | 294) | = | -12.62585029 | ||
| 7 | 76864 | 2458 | - | 2567 | = | -109 | * | (29 | / | 294) | = | -10.7517006 | ||
| 8 | 76866 | 2549 | - | 2586 | = | -37 | * | (31 | / | 294) | = | -3.90136051 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Spanos (Alex G.) Elementary | -62 | ||||||||||||
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 | 77362 | 2395 | - | 2436 | = | -41 | * | (50 | / | 278) | = | -7.37410072 | ||
| 4 | 77363 | 2428 | - | 2485 | = | -57 | * | (52 | / | 278) | = | -10.66187046 | ||
| 5 | 77364 | 2446 | - | 2528 | = | -82 | * | (58 | / | 278) | = | -17.10791363 | ||
| 6 | 77365 | 2448 | - | 2552 | = | -104 | * | (57 | / | 278) | = | -21.32374098 | ||
| 7 | 77366 | 2551 | - | 2567 | = | -16 | * | (31 | / | 278) | = | -1.78417266 | ||
| 8 | 77367 | 2477 | - | 2586 | = | -109 | * | (30 | / | 278) | = | -11.76258992 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Spanos (Alex G.) Elementary | -70 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -83 | -74 | -63 | -62 | -70 | -352.0 | -70.4 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -46.4
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -94.4
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 | 87% | 80% | 91% | 91% | 90% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Stockton Unified school district | County of San Joaquin
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.
Spanos (Alex G.) Elementary math proficiency
Zero+ meets standard.
85% less $meal
80% less $meal
88% less $meal
89% less $meal
88% 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.