Giannini (A.P.) Middle (Data source)
Source data for Giannini (A.P.) Middle
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 | 2374830 | 2561 | - | 2552 | = | 9 | * | (388 | / | 1140) | = | 3.06315789 | ||
| 7 | 2374833 | 2610 | - | 2567 | = | 43 | * | (384 | / | 1140) | = | 14.48421052 | ||
| 8 | 2374834 | 2608 | - | 2586 | = | 22 | * | (368 | / | 1140) | = | 7.10175437 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Giannini (A.P.) Middle | 25 | ||||||||||||
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 | 72540 | 2589 | - | 2552 | = | 37 | * | (395 | / | 1164) | = | 12.55584192 | ||
| 7 | 72541 | 2598 | - | 2567 | = | 31 | * | (382 | / | 1164) | = | 10.17353951 | ||
| 8 | 72543 | 2631 | - | 2586 | = | 45 | * | (387 | / | 1164) | = | 14.96134017 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Giannini (A.P.) Middle | 38 | ||||||||||||
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 | 74514 | 2572 | - | 2552 | = | 20 | * | (385 | / | 1147) | = | 6.71316476 | ||
| 7 | 74515 | 2629 | - | 2567 | = | 62 | * | (383 | / | 1147) | = | 20.70270266 | ||
| 8 | 74518 | 2620 | - | 2586 | = | 34 | * | (379 | / | 1147) | = | 11.23452483 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Giannini (A.P.) Middle | 39 | ||||||||||||
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 | 74688 | 2587 | - | 2552 | = | 35 | * | (373 | / | 1125) | = | 11.60444443 | ||
| 7 | 74689 | 2618 | - | 2567 | = | 51 | * | (374 | / | 1125) | = | 16.95466664 | ||
| 8 | 74692 | 2651 | - | 2586 | = | 65 | * | (378 | / | 1125) | = | 21.84 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Giannini (A.P.) Middle | 50 | ||||||||||||
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 | 75213 | 2584 | - | 2552 | = | 32 | * | (378 | / | 1128) | = | 10.72340422 | ||
| 7 | 75214 | 2625 | - | 2567 | = | 58 | * | (382 | / | 1128) | = | 19.64184396 | ||
| 8 | 75215 | 2628 | - | 2586 | = | 42 | * | (368 | / | 1128) | = | 13.70212763 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Giannini (A.P.) Middle | 44 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| 25 | 38 | 39 | 50 | 44 | 196.0 | 39.2 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 66.2
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: 12.2
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 | 54% | 41% | 39% | 39% | 38% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
San Francisco Unified school district | County of San Francisco
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.
Giannini (A.P.) Middle math proficiency
Zero+ meets standard.
35% less $meal
30% less $meal
29% less $meal
30% less $meal
27% 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.