Fern Elementary (Data source)
Source data for Fern 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 | 1130416 | 2434 | - | 2436 | = | -2 | * | (94 | / | 277) | = | -0.67870036 | ||
| 4 | 1130417 | 2483 | - | 2485 | = | -2 | * | (94 | / | 277) | = | -0.67870036 | ||
| 5 | 1130420 | 2483 | - | 2528 | = | -45 | * | (89 | / | 277) | = | -14.45848371 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Fern Elementary | -16 | ||||||||||||
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 | 35251 | 2434 | - | 2436 | = | -2 | * | (85 | / | 272) | = | -0.625 | ||
| 4 | 35253 | 2488 | - | 2485 | = | 3 | * | (91 | / | 272) | = | 1.00367647 | ||
| 5 | 35256 | 2530 | - | 2528 | = | 2 | * | (96 | / | 272) | = | 0.70588235 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Fern Elementary | 1 | ||||||||||||
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 | 35949 | 2475 | - | 2436 | = | 39 | * | (104 | / | 289) | = | 14.03460205 | ||
| 4 | 35951 | 2481 | - | 2485 | = | -4 | * | (93 | / | 289) | = | -1.28719723 | ||
| 5 | 35953 | 2518 | - | 2528 | = | -10 | * | (92 | / | 289) | = | -3.183391 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Fern Elementary | 10 | ||||||||||||
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 | 35949 | 2474 | - | 2436 | = | 38 | * | (80 | / | 282) | = | 10.78014183 | ||
| 4 | 35951 | 2496 | - | 2485 | = | 11 | * | (106 | / | 282) | = | 4.13475176 | ||
| 5 | 35953 | 2517 | - | 2528 | = | -11 | * | (96 | / | 282) | = | -3.74468084 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Fern Elementary | 11 | ||||||||||||
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 | 36118 | 2455 | - | 2436 | = | 19 | * | (94 | / | 278) | = | 6.42446042 | ||
| 4 | 36119 | 2497 | - | 2485 | = | 12 | * | (77 | / | 278) | = | 3.323741 | ||
| 5 | 36120 | 2545 | - | 2528 | = | 17 | * | (107 | / | 278) | = | 6.54316546 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Fern Elementary | 16 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -16 | 1 | 10 | 11 | 16 | 22.0 | 4.4 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 40.4
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -31.6
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 | 36% | 38% | 35% | 43% | 39% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Torrance Unified school district | County of Los Angeles
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.
Fern Elementary math proficiency
Zero+ meets standard.
28% less $meal
29% less $meal
25% less $meal
37% less $meal
35% 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.