San Diego SCPA (Data source)
Source data for San Diego SCPA
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 |
||
| 6 | 2234816 | 2498 | - | 2552 | = | -54 | * | (188 | / | 764) | = | -13.28795809 | ||
| 7 | 2234819 | 2516 | - | 2567 | = | -51 | * | (198 | / | 764) | = | -13.21727745 | ||
| 8 | 2234820 | 2544 | - | 2586 | = | -42 | * | (186 | / | 764) | = | -10.22513087 | ||
| 11 | 2234823 | 2590 | - | 2628 | = | -38 | * | (192 | / | 764) | = | -9.5497382 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for San Diego SCPA | -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 |
||
| 6 | 68608 | 2485 | - | 2552 | = | -67 | * | (212 | / | 767) | = | -18.51890479 | ||
| 7 | 68609 | 2528 | - | 2567 | = | -39 | * | (196 | / | 767) | = | -9.96610169 | ||
| 8 | 68612 | 2496 | - | 2586 | = | -90 | * | (210 | / | 767) | = | -24.64146018 | ||
| 11 | 68613 | 2601 | - | 2628 | = | -27 | * | (149 | / | 767) | = | -5.2451108 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for San Diego SCPA | -58 | ||||||||||||
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 |
||
| 6 | 70422 | 2498 | - | 2552 | = | -54 | * | (198 | / | 787) | = | -13.58576874 | ||
| 7 | 70425 | 2497 | - | 2567 | = | -70 | * | (217 | / | 787) | = | -19.30114354 | ||
| 8 | 70427 | 2527 | - | 2586 | = | -59 | * | (195 | / | 787) | = | -14.61880554 | ||
| 11 | 70429 | 2607 | - | 2628 | = | -21 | * | (177 | / | 787) | = | -4.72299872 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for San Diego SCPA | -52 | ||||||||||||
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 |
||
| 6 | 70571 | 2485 | - | 2552 | = | -67 | * | (166 | / | 747) | = | -14.88888887 | ||
| 7 | 70574 | 2498 | - | 2567 | = | -69 | * | (224 | / | 747) | = | -20.69076304 | ||
| 8 | 70575 | 2491 | - | 2586 | = | -95 | * | (217 | / | 747) | = | -27.59705483 | ||
| 11 | 70578 | 2568 | - | 2628 | = | -60 | * | (140 | / | 747) | = | -11.24497986 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for San Diego SCPA | -74 | ||||||||||||
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 |
||
| 6 | 71058 | 2512 | - | 2552 | = | -40 | * | (164 | / | 780) | = | -8.4102564 | ||
| 7 | 71059 | 2521 | - | 2567 | = | -46 | * | (213 | / | 780) | = | -12.56153846 | ||
| 8 | 71060 | 2515 | - | 2586 | = | -71 | * | (216 | / | 780) | = | -19.6615384 | ||
| 11 | 71061 | 2580 | - | 2628 | = | -48 | * | (187 | / | 780) | = | -11.50769227 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for San Diego SCPA | -52 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -46 | -58 | -52 | -74 | -52 | -282.0 | -56.4 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -26.4
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -86.4
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 | 55% | 56% | 56% | 57% | 55% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
San Diego Unified school district | County of San Diego
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.
San Diego SCPA math proficiency
Zero+ meets standard.
38% less $meal
41% less $meal
41% less $meal
41% less $meal
40% 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.
K-12 Schools (Public) schools in San Diego Unified (2)
| Home & Hosp/Transition Support | San Diego SCPA |