Norco Elementary (Data source)
Source data for Norco 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 | 1662572 | 2421 | - | 2436 | = | -15 | * | (99 | / | 390) | = | -3.8076923 | ||
| 4 | 1662573 | 2480 | - | 2485 | = | -5 | * | (101 | / | 390) | = | -1.29487179 | ||
| 5 | 1662576 | 2523 | - | 2528 | = | -5 | * | (100 | / | 390) | = | -1.28205128 | ||
| 6 | 1662577 | 2503 | - | 2552 | = | -49 | * | (90 | / | 390) | = | -11.30769227 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Norco Elementary | -18 | ||||||||||||
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 | 51899 | 2432 | - | 2436 | = | -4 | * | (87 | / | 360) | = | -0.96666666 | ||
| 4 | 51901 | 2475 | - | 2485 | = | -10 | * | (94 | / | 360) | = | -2.61111111 | ||
| 5 | 51903 | 2533 | - | 2528 | = | 5 | * | (93 | / | 360) | = | 1.29166667 | ||
| 6 | 51904 | 2545 | - | 2552 | = | -7 | * | (86 | / | 360) | = | -1.67222222 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Norco Elementary | -4 | ||||||||||||
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 | 53422 | 2424 | - | 2436 | = | -12 | * | (75 | / | 338) | = | -2.66272189 | ||
| 4 | 53423 | 2478 | - | 2485 | = | -7 | * | (91 | / | 338) | = | -1.88461538 | ||
| 5 | 53425 | 2513 | - | 2528 | = | -15 | * | (89 | / | 338) | = | -3.94970414 | ||
| 6 | 53427 | 2570 | - | 2552 | = | 18 | * | (83 | / | 338) | = | 4.42011834 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Norco Elementary | -4 | ||||||||||||
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 | 53511 | 2442 | - | 2436 | = | 6 | * | (84 | / | 355) | = | 1.41971831 | ||
| 4 | 53512 | 2479 | - | 2485 | = | -6 | * | (85 | / | 355) | = | -1.43661971 | ||
| 5 | 53514 | 2510 | - | 2528 | = | -18 | * | (97 | / | 355) | = | -4.91830985 | ||
| 6 | 53517 | 2543 | - | 2552 | = | -9 | * | (89 | / | 355) | = | -2.25633803 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Norco Elementary | -7 | ||||||||||||
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 | 53746 | 2433 | - | 2436 | = | -3 | * | (69 | / | 338) | = | -0.61242603 | ||
| 4 | 53747 | 2507 | - | 2485 | = | 22 | * | (87 | / | 338) | = | 5.66272188 | ||
| 5 | 53748 | 2520 | - | 2528 | = | -8 | * | (90 | / | 338) | = | -2.13017751 | ||
| 6 | 53749 | 2546 | - | 2552 | = | -6 | * | (92 | / | 338) | = | -1.63313609 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Norco Elementary | 1 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -18 | -4 | -4 | -7 | 1 | -32.0 | -6.4 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 14.6
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -27.4
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 | 34% | 36% | 36% | 42% | 39% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Corona-Norco Unified school district | County of Riverside
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.
Norco Elementary math proficiency
Zero+ meets standard.
27% less $meal
30% less $meal
28% 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.