Presidio Middle (Data source)
Source data for Presidio 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 | 2378875 | 2575 | - | 2552 | = | 23 | * | (344 | / | 1054) | = | 7.50664135 | ||
| 7 | 2378876 | 2603 | - | 2567 | = | 36 | * | (357 | / | 1054) | = | 12.19354837 | ||
| 8 | 2378879 | 2631 | - | 2586 | = | 45 | * | (353 | / | 1054) | = | 15.0711575 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Presidio Middle | 35 | ||||||||||||
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 | 72643 | 2568 | - | 2552 | = | 16 | * | (367 | / | 1098) | = | 5.34790528 | ||
| 7 | 72646 | 2602 | - | 2567 | = | 35 | * | (365 | / | 1098) | = | 11.63479051 | ||
| 8 | 72647 | 2634 | - | 2586 | = | 48 | * | (366 | / | 1098) | = | 15.99999998 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Presidio Middle | 33 | ||||||||||||
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 | 74615 | 2549 | - | 2552 | = | -3 | * | (360 | / | 1083) | = | -0.99722992 | ||
| 7 | 74617 | 2612 | - | 2567 | = | 45 | * | (361 | / | 1083) | = | 14.99999999 | ||
| 8 | 74620 | 2642 | - | 2586 | = | 56 | * | (362 | / | 1083) | = | 18.71837486 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Presidio Middle | 33 | ||||||||||||
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 | 74790 | 2570 | - | 2552 | = | 18 | * | (336 | / | 1041) | = | 5.80979826 | ||
| 7 | 74791 | 2590 | - | 2567 | = | 23 | * | (355 | / | 1041) | = | 7.84341977 | ||
| 8 | 74794 | 2637 | - | 2586 | = | 51 | * | (350 | / | 1041) | = | 17.14697403 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Presidio Middle | 31 | ||||||||||||
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 | 75315 | 2555 | - | 2552 | = | 3 | * | (360 | / | 1027) | = | 1.05160662 | ||
| 7 | 75316 | 2620 | - | 2567 | = | 53 | * | (324 | / | 1027) | = | 16.72054526 | ||
| 8 | 75317 | 2640 | - | 2586 | = | 54 | * | (343 | / | 1027) | = | 18.03505354 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Presidio Middle | 36 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| 35 | 33 | 33 | 31 | 36 | 168.0 | 33.6 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 36.6
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: 30.6
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 | 48% | 39% | 39% | 36% | 37% |
| 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.
Presidio Middle math proficiency
Zero+ meets standard.
35% less $meal
30% less $meal
30% less $meal
30% less $meal
31% 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.