Shasta Elementary (Data source)
Source data for Shasta 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 | 140585 | 2435 | - | 2436 | = | -1 | * | (91 | / | 416) | = | -0.21875 | ||
| 4 | 140588 | 2467 | - | 2485 | = | -18 | * | (115 | / | 416) | = | -4.97596153 | ||
| 5 | 140589 | 2513 | - | 2528 | = | -15 | * | (98 | / | 416) | = | -3.53365385 | ||
| 6 | 140592 | 2514 | - | 2552 | = | -38 | * | (112 | / | 416) | = | -10.23076922 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Shasta Elementary | -19 | ||||||||||||
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 | 4071 | 2415 | - | 2436 | = | -21 | * | (109 | / | 412) | = | -5.55582523 | ||
| 4 | 4074 | 2507 | - | 2485 | = | 22 | * | (89 | / | 412) | = | 4.75242717 | ||
| 5 | 4076 | 2524 | - | 2528 | = | -4 | * | (124 | / | 412) | = | -1.20388349 | ||
| 6 | 4077 | 2511 | - | 2552 | = | -41 | * | (90 | / | 412) | = | -8.95631064 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Shasta Elementary | -11 | ||||||||||||
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 | 4150 | 2442 | - | 2436 | = | 6 | * | (91 | / | 310) | = | 1.76129032 | ||
| 4 | 4152 | 2497 | - | 2485 | = | 12 | * | (121 | / | 310) | = | 4.68387096 | ||
| 5 | 4153 | 2506 | - | 2528 | = | -22 | * | (98 | / | 310) | = | -6.9548387 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Shasta Elementary | -1 | ||||||||||||
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 | 4151 | 2445 | - | 2436 | = | 9 | * | (105 | / | 332) | = | 2.84638554 | ||
| 4 | 4154 | 2501 | - | 2485 | = | 16 | * | (100 | / | 332) | = | 4.8192771 | ||
| 5 | 4155 | 2513 | - | 2528 | = | -15 | * | (127 | / | 332) | = | -5.7379518 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Shasta Elementary | 2 | ||||||||||||
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 | 4205 | 2460 | - | 2436 | = | 24 | * | (125 | / | 319) | = | 9.4043887 | ||
| 4 | 4206 | 2503 | - | 2485 | = | 18 | * | (96 | / | 319) | = | 5.41692788 | ||
| 5 | 4207 | 2512 | - | 2528 | = | -16 | * | (98 | / | 319) | = | -4.9153605 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Shasta Elementary | 10 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -19 | -11 | -1 | 2 | 10 | -19.0 | -3.8 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 29.2
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -36.8
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 | 31% | 31% | 32% | 37% | 36% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Chico Unified school district | County of Butte
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.
Shasta Elementary math proficiency
Zero+ meets standard.
26% less $meal
26% less $meal
27% less $meal
34% less $meal
33% 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.