Crest Elementary (Data source)
Source data for Crest 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 | 2118971 | 2402 | - | 2436 | = | -34 | * | (19 | / | 69) | = | -9.36231881 | ||
| 4 | 2118974 | 2478 | - | 2485 | = | -7 | * | (25 | / | 69) | = | -2.53623188 | ||
| 5 | 2118975 | 2484 | - | 2528 | = | -44 | * | (25 | / | 69) | = | -15.94202896 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Crest Elementary | -28 | ||||||||||||
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 | 65085 | 2397 | - | 2436 | = | -39 | * | (33 | / | 78) | = | -16.5 | ||
| 4 | 65087 | 2468 | - | 2485 | = | -17 | * | (19 | / | 78) | = | -4.14102563 | ||
| 5 | 65089 | 2521 | - | 2528 | = | -7 | * | (26 | / | 78) | = | -2.33333333 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Crest Elementary | -23 | ||||||||||||
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 | 66901 | 2391 | - | 2436 | = | -45 | * | (19 | / | 66) | = | -12.95454542 | ||
| 4 | 66902 | 2437 | - | 2485 | = | -48 | * | (27 | / | 66) | = | -19.63636363 | ||
| 5 | 66904 | 2486 | - | 2528 | = | -42 | * | (20 | / | 66) | = | -12.72727273 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Crest Elementary | -45 | ||||||||||||
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 | 67004 | 2425 | - | 2436 | = | -11 | * | (19 | / | 62) | = | -3.37096773 | ||
| 4 | 67006 | 2468 | - | 2485 | = | -17 | * | (18 | / | 62) | = | -4.93548386 | ||
| 5 | 67008 | 2465 | - | 2528 | = | -63 | * | (25 | / | 62) | = | -25.40322578 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Crest Elementary | -34 | ||||||||||||
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 | 67501 | 2452 | - | 2436 | = | 16 | * | (16 | / | 43) | = | 5.95348837 | ||
| 4 | 67502 | 2410 | - | 2485 | = | -75 | * | (12 | / | 43) | = | -20.93023253 | ||
| 5 | 67503 | 2484 | - | 2528 | = | -44 | * | (15 | / | 43) | = | -15.3488372 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Crest Elementary | -30 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -28 | -23 | -45 | -34 | -30 | -160.0 | -32.0 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -8.0
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -56.0
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 | 51% | 44% | 46% | 37% | 38% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Cajon Valley Union 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.
Crest Elementary math proficiency
Zero+ meets standard.
35% less $meal
40% less $meal
36% less $meal
32% 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.