Spruce Elementary (Data source)
Source data for Spruce 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 | 2563203 | 2400 | - | 2436 | = | -36 | * | (120 | / | 335) | = | -12.89552238 | ||
| 4 | 2563206 | 2429 | - | 2485 | = | -56 | * | (105 | / | 335) | = | -17.55223876 | ||
| 5 | 2563207 | 2427 | - | 2528 | = | -101 | * | (110 | / | 335) | = | -33.16417901 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Spruce Elementary | -64 | ||||||||||||
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 | 78079 | 2403 | - | 2436 | = | -33 | * | (94 | / | 319) | = | -9.72413792 | ||
| 4 | 78082 | 2438 | - | 2485 | = | -47 | * | (122 | / | 319) | = | -17.97492163 | ||
| 5 | 78083 | 2482 | - | 2528 | = | -46 | * | (103 | / | 319) | = | -14.85266455 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Spruce Elementary | -43 | ||||||||||||
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 | 80241 | 2420 | - | 2436 | = | -16 | * | (82 | / | 293) | = | -4.4778157 | ||
| 4 | 80242 | 2433 | - | 2485 | = | -52 | * | (93 | / | 293) | = | -16.50511944 | ||
| 5 | 80244 | 2476 | - | 2528 | = | -52 | * | (118 | / | 293) | = | -20.9419795 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Spruce Elementary | -42 | ||||||||||||
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 | 80395 | 2378 | - | 2436 | = | -58 | * | (89 | / | 262) | = | -19.70229005 | ||
| 4 | 80397 | 2468 | - | 2485 | = | -17 | * | (80 | / | 262) | = | -5.19083969 | ||
| 5 | 80399 | 2470 | - | 2528 | = | -58 | * | (93 | / | 262) | = | -20.58778626 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Spruce Elementary | -45 | ||||||||||||
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 | 80880 | 2399 | - | 2436 | = | -37 | * | (89 | / | 253) | = | -13.01581027 | ||
| 4 | 80881 | 2440 | - | 2485 | = | -45 | * | (84 | / | 253) | = | -14.94071145 | ||
| 5 | 80882 | 2500 | - | 2528 | = | -28 | * | (80 | / | 253) | = | -8.85375492 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Spruce Elementary | -37 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -64 | -43 | -42 | -45 | -37 | -231.0 | -46.2 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -16.2
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -76.2
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 | 68% | 67% | 63% | 69% | 73% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
South San Francisco Unified school district | County of San Mateo
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.
Spruce Elementary math proficiency
Zero+ meets standard.
58% less $meal
57% less $meal
51% less $meal
58% less $meal
62% 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.