Lichen K-8 (Data source)
Source data for Lichen K-8
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 | 1880435 | 2382 | - | 2436 | = | -54 | * | (62 | / | 376) | = | -8.90425532 | ||
4 | 1880438 | 2431 | - | 2485 | = | -54 | * | (64 | / | 376) | = | -9.19148931 | ||
5 | 1880439 | 2427 | - | 2528 | = | -101 | * | (64 | / | 376) | = | -17.19148927 | ||
6 | 1880442 | 2490 | - | 2552 | = | -62 | * | (66 | / | 376) | = | -10.88297867 | ||
7 | 1880443 | 2481 | - | 2567 | = | -86 | * | (61 | / | 376) | = | -13.95212761 | ||
8 | 1880446 | 2508 | - | 2586 | = | -78 | * | (59 | / | 376) | = | -12.23936165 | ||
Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Lichen K-8 | -72 |
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 | 58009 | 2405 | - | 2436 | = | -31 | * | (72 | / | 380) | = | -5.8736842 | ||
4 | 58010 | 2446 | - | 2485 | = | -39 | * | (61 | / | 380) | = | -6.26052629 | ||
5 | 58013 | 2441 | - | 2528 | = | -87 | * | (64 | / | 380) | = | -14.65263152 | ||
6 | 58014 | 2472 | - | 2552 | = | -80 | * | (58 | / | 380) | = | -12.21052624 | ||
7 | 58016 | 2523 | - | 2567 | = | -44 | * | (64 | / | 380) | = | -7.41052629 | ||
8 | 58019 | 2522 | - | 2586 | = | -64 | * | (61 | / | 380) | = | -10.27368416 | ||
Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Lichen K-8 | -57 |
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 | 59704 | 2374 | - | 2436 | = | -62 | * | (73 | / | 387) | = | -11.69509038 | ||
4 | 59705 | 2446 | - | 2485 | = | -39 | * | (67 | / | 387) | = | -6.75193795 | ||
5 | 59708 | 2446 | - | 2528 | = | -82 | * | (63 | / | 387) | = | -13.34883715 | ||
6 | 59709 | 2472 | - | 2552 | = | -80 | * | (63 | / | 387) | = | -13.02325576 | ||
7 | 59711 | 2500 | - | 2567 | = | -67 | * | (62 | / | 387) | = | -10.73385011 | ||
8 | 59714 | 2525 | - | 2586 | = | -61 | * | (59 | / | 387) | = | -9.29974158 | ||
Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Lichen K-8 | -65 |
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 | 59820 | 2404 | - | 2436 | = | -32 | * | (66 | / | 368) | = | -5.73913043 | ||
4 | 59823 | 2437 | - | 2485 | = | -48 | * | (71 | / | 368) | = | -9.26086954 | ||
5 | 59824 | 2452 | - | 2528 | = | -76 | * | (61 | / | 368) | = | -12.59782604 | ||
6 | 59827 | 2515 | - | 2552 | = | -37 | * | (57 | / | 368) | = | -5.73097825 | ||
7 | 59828 | 2506 | - | 2567 | = | -61 | * | (54 | / | 368) | = | -8.95108693 | ||
8 | 59831 | 2535 | - | 2586 | = | -51 | * | (59 | / | 368) | = | -8.17663039 | ||
Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Lichen K-8 | -50 |
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 | 60078 | 2430 | - | 2436 | = | -6 | * | (63 | / | 373) | = | -1.01340482 | ||
4 | 60079 | 2458 | - | 2485 | = | -27 | * | (66 | / | 373) | = | -4.77747987 | ||
5 | 60080 | 2427 | - | 2528 | = | -101 | * | (67 | / | 373) | = | -18.14209106 | ||
6 | 60081 | 2500 | - | 2552 | = | -52 | * | (67 | / | 373) | = | -9.34048253 | ||
7 | 60082 | 2525 | - | 2567 | = | -42 | * | (57 | / | 373) | = | -6.41823055 | ||
8 | 60083 | 2509 | - | 2586 | = | -77 | * | (53 | / | 373) | = | -10.9410187 | ||
Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Lichen K-8 | -51 |
Last steps
Compute the average
2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
---|---|---|---|---|---|---|
-72 | -57 | -65 | -50 | -51 | -295.0 | -59.0 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -32.0
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -86.0
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 | 69% | 69% | 70% | 72% | 68% |
Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
San Juan Unified school district County of Sacramento
THIS chart shows what the school system "wants"
PLUS a "special" or "outside" cause of variation, parent education.
NOT what teachers want.
NOT what principals want.
NOT what parents want.
Lichen K-8 math proficiency
Zero+ meets standard.
59% less $meal
60% less $meal
56% less $meal
63% less $meal
59% 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.