Rock Creek Elementary (Data source)
Source data for Rock Creek 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 | 1630769 | 2464 | - | 2436 | = | 28 | * | (70 | / | 287) | = | 6.82926829 | ||
| 4 | 1630772 | 2500 | - | 2485 | = | 15 | * | (86 | / | 287) | = | 4.49477351 | ||
| 5 | 1630773 | 2545 | - | 2528 | = | 17 | * | (66 | / | 287) | = | 3.90940765 | ||
| 6 | 1630776 | 2579 | - | 2552 | = | 27 | * | (65 | / | 287) | = | 6.11498257 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Rock Creek Elementary | 21 | ||||||||||||
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 | 50973 | 2469 | - | 2436 | = | 33 | * | (73 | / | 300) | = | 8.02999999 | ||
| 4 | 50974 | 2507 | - | 2485 | = | 22 | * | (66 | / | 300) | = | 4.84 | ||
| 5 | 50977 | 2541 | - | 2528 | = | 13 | * | (95 | / | 300) | = | 4.11666666 | ||
| 6 | 50978 | 2593 | - | 2552 | = | 41 | * | (66 | / | 300) | = | 9.02 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Rock Creek Elementary | 26 | ||||||||||||
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 | 52433 | 2462 | - | 2436 | = | 26 | * | (73 | / | 324) | = | 5.85802467 | ||
| 4 | 52434 | 2505 | - | 2485 | = | 20 | * | (93 | / | 324) | = | 5.74074074 | ||
| 5 | 52437 | 2553 | - | 2528 | = | 25 | * | (64 | / | 324) | = | 4.9382716 | ||
| 6 | 52438 | 2580 | - | 2552 | = | 28 | * | (94 | / | 324) | = | 8.12345677 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Rock Creek Elementary | 25 | ||||||||||||
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 | 52499 | 2461 | - | 2436 | = | 25 | * | (82 | / | 323) | = | 6.34674923 | ||
| 4 | 52500 | 2521 | - | 2485 | = | 36 | * | (76 | / | 323) | = | 8.47058821 | ||
| 5 | 52503 | 2537 | - | 2528 | = | 9 | * | (102 | / | 323) | = | 2.84210526 | ||
| 6 | 52504 | 2586 | - | 2552 | = | 34 | * | (63 | / | 323) | = | 6.63157893 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Rock Creek Elementary | 24 | ||||||||||||
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 | 52674 | 2468 | - | 2436 | = | 32 | * | (92 | / | 363) | = | 8.11019283 | ||
| 4 | 52675 | 2525 | - | 2485 | = | 40 | * | (80 | / | 363) | = | 8.81542696 | ||
| 5 | 52676 | 2543 | - | 2528 | = | 15 | * | (77 | / | 363) | = | 3.18181818 | ||
| 6 | 52677 | 2561 | - | 2552 | = | 9 | * | (114 | / | 363) | = | 2.82644627 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Rock Creek Elementary | 23 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| 21 | 26 | 25 | 24 | 23 | 119.0 | 23.8 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 26.8
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: 20.8
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 | 21% | 21% | 20% | 23% | 23% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Rocklin Unified school district | County of Placer
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.
Rock Creek Elementary math proficiency
Zero+ meets standard.
14% less $meal
15% less $meal
14% less $meal
20% less $meal
19% 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.