Commodore Stockton Skills (Data source)
Source data for Commodore Stockton Skills
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 | 2463802 | 2417 | - | 2436 | = | -19 | * | (116 | / | 693) | = | -3.18037517 | ||
| 4 | 2463803 | 2466 | - | 2485 | = | -19 | * | (125 | / | 693) | = | -3.42712842 | ||
| 5 | 2463806 | 2501 | - | 2528 | = | -27 | * | (117 | / | 693) | = | -4.55844154 | ||
| 6 | 2463807 | 2529 | - | 2552 | = | -23 | * | (111 | / | 693) | = | -3.68398268 | ||
| 7 | 2463810 | 2515 | - | 2567 | = | -52 | * | (113 | / | 693) | = | -8.47907648 | ||
| 8 | 2463811 | 2517 | - | 2586 | = | -69 | * | (111 | / | 693) | = | -11.05194804 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Commodore Stockton Skills | -34 | ||||||||||||
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 | 75136 | 2435 | - | 2436 | = | -1 | * | (120 | / | 692) | = | -0.1734104 | ||
| 4 | 75137 | 2479 | - | 2485 | = | -6 | * | (118 | / | 692) | = | -1.02312139 | ||
| 5 | 75140 | 2498 | - | 2528 | = | -30 | * | (123 | / | 692) | = | -5.33236992 | ||
| 6 | 75142 | 2553 | - | 2552 | = | 1 | * | (119 | / | 692) | = | 0.17196532 | ||
| 7 | 75143 | 2535 | - | 2567 | = | -32 | * | (104 | / | 692) | = | -4.80924854 | ||
| 8 | 75146 | 2527 | - | 2586 | = | -59 | * | (108 | / | 692) | = | -9.20809248 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Commodore Stockton Skills | -20 | ||||||||||||
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 | 77148 | 2434 | - | 2436 | = | -2 | * | (114 | / | 705) | = | -0.32340425 | ||
| 4 | 77151 | 2476 | - | 2485 | = | -9 | * | (127 | / | 705) | = | -1.62127659 | ||
| 5 | 77152 | 2493 | - | 2528 | = | -35 | * | (122 | / | 705) | = | -6.05673758 | ||
| 6 | 77154 | 2535 | - | 2552 | = | -17 | * | (125 | / | 705) | = | -3.01418439 | ||
| 7 | 77156 | 2547 | - | 2567 | = | -20 | * | (118 | / | 705) | = | -3.34751772 | ||
| 8 | 77158 | 2533 | - | 2586 | = | -53 | * | (99 | / | 705) | = | -7.44255314 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Commodore Stockton Skills | -22 | ||||||||||||
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 | 77334 | 2432 | - | 2436 | = | -4 | * | (109 | / | 709) | = | -0.61495063 | ||
| 4 | 77336 | 2492 | - | 2485 | = | 7 | * | (122 | / | 709) | = | 1.20451339 | ||
| 5 | 77338 | 2499 | - | 2528 | = | -29 | * | (122 | / | 709) | = | -4.99012692 | ||
| 6 | 77340 | 2536 | - | 2552 | = | -16 | * | (127 | / | 709) | = | -2.86600845 | ||
| 7 | 77342 | 2530 | - | 2567 | = | -37 | * | (115 | / | 709) | = | -6.00141043 | ||
| 8 | 77344 | 2537 | - | 2586 | = | -49 | * | (114 | / | 709) | = | -7.87870236 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Commodore Stockton Skills | -21 | ||||||||||||
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 | 77856 | 2433 | - | 2436 | = | -3 | * | (98 | / | 689) | = | -0.42670537 | ||
| 4 | 77857 | 2468 | - | 2485 | = | -17 | * | (113 | / | 689) | = | -2.78809869 | ||
| 5 | 77858 | 2503 | - | 2528 | = | -25 | * | (123 | / | 689) | = | -4.46298983 | ||
| 6 | 77859 | 2531 | - | 2552 | = | -21 | * | (128 | / | 689) | = | -3.90130623 | ||
| 7 | 77860 | 2533 | - | 2567 | = | -34 | * | (115 | / | 689) | = | -5.67489114 | ||
| 8 | 77861 | 2530 | - | 2586 | = | -56 | * | (112 | / | 689) | = | -9.10304786 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Commodore Stockton Skills | -26 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -34 | -20 | -22 | -21 | -26 | -123.0 | -24.6 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -9.6
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -39.6
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 | 73% | 67% | 71% | 65% | 56% |
| 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.
Commodore Stockton Skills math proficiency
Zero+ meets standard.
61% less $meal
53% less $meal
56% less $meal
56% less $meal
53% 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.