Chapman Elementary (Data source)
Source data for Chapman 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 | 137896 | 2392 | - | 2436 | = | -44 | * | (50 | / | 170) | = | -12.94117647 | ||
| 4 | 137899 | 2406 | - | 2485 | = | -79 | * | (38 | / | 170) | = | -17.65882347 | ||
| 5 | 137900 | 2491 | - | 2528 | = | -37 | * | (37 | / | 170) | = | -8.05294115 | ||
| 6 | 137903 | 2472 | - | 2552 | = | -80 | * | (45 | / | 170) | = | -21.17647056 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Chapman Elementary | -60 | ||||||||||||
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 | 3992 | 2384 | - | 2436 | = | -52 | * | (49 | / | 173) | = | -14.72832369 | ||
| 4 | 3993 | 2431 | - | 2485 | = | -54 | * | (45 | / | 173) | = | -14.04624272 | ||
| 5 | 3996 | 2387 | - | 2528 | = | -141 | * | (36 | / | 173) | = | -29.34104039 | ||
| 6 | 3997 | 2453 | - | 2552 | = | -99 | * | (43 | / | 173) | = | -24.60693639 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Chapman Elementary | -83 | ||||||||||||
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 | 4086 | 2430 | - | 2436 | = | -6 | * | (39 | / | 142) | = | -1.64788732 | ||
| 4 | 4087 | 2418 | - | 2485 | = | -67 | * | (45 | / | 142) | = | -21.23239434 | ||
| 5 | 4090 | 2457 | - | 2528 | = | -71 | * | (58 | / | 142) | = | -28.99999998 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Chapman Elementary | -52 | ||||||||||||
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 | 4087 | 2388 | - | 2436 | = | -48 | * | (35 | / | 118) | = | -14.23728811 | ||
| 4 | 4090 | 2446 | - | 2485 | = | -39 | * | (41 | / | 118) | = | -13.55084745 | ||
| 5 | 4091 | 2441 | - | 2528 | = | -87 | * | (42 | / | 118) | = | -30.96610166 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Chapman Elementary | -59 | ||||||||||||
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 | 4141 | 2350 | - | 2436 | = | -86 | * | (59 | / | 141) | = | -35.98581558 | ||
| 4 | 4142 | 2432 | - | 2485 | = | -53 | * | (39 | / | 141) | = | -14.65957443 | ||
| 5 | 4143 | 2457 | - | 2528 | = | -71 | * | (43 | / | 141) | = | -21.65248227 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Chapman Elementary | -72 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -60 | -83 | -52 | -59 | -72 | -326.0 | -65.2 |
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: -101.2
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 | 86% | 84% | 77% | 88% | 80% |
| 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.
Chapman Elementary math proficiency
Zero+ meets standard.
80% less $meal
76% less $meal
70% less $meal
83% less $meal
78% 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.