Junction K-8 (Data source)
Source data for Junction 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 | 56744 | 2411 | - | 2436 | = | -25 | * | (69 | / | 641) | = | -2.69110763 | ||
| 4 | 56745 | 2413 | - | 2485 | = | -72 | * | (64 | / | 641) | = | -7.1887675 | ||
| 5 | 56748 | 2447 | - | 2528 | = | -81 | * | (55 | / | 641) | = | -6.95007799 | ||
| 6 | 56749 | 2476 | - | 2552 | = | -76 | * | (156 | / | 641) | = | -18.49609978 | ||
| 7 | 56752 | 2519 | - | 2567 | = | -48 | * | (144 | / | 641) | = | -10.78315128 | ||
| 8 | 56753 | 2528 | - | 2586 | = | -58 | * | (153 | / | 641) | = | -13.84399373 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Junction K-8 | -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 | 1501 | 2410 | - | 2436 | = | -26 | * | (63 | / | 622) | = | -2.6334405 | ||
| 4 | 1503 | 2450 | - | 2485 | = | -35 | * | (68 | / | 622) | = | -3.82636653 | ||
| 5 | 1506 | 2459 | - | 2528 | = | -69 | * | (61 | / | 622) | = | -6.76688099 | ||
| 6 | 1508 | 2480 | - | 2552 | = | -72 | * | (137 | / | 622) | = | -15.85852085 | ||
| 7 | 1509 | 2501 | - | 2567 | = | -66 | * | (148 | / | 622) | = | -15.70418005 | ||
| 8 | 1512 | 2559 | - | 2586 | = | -27 | * | (145 | / | 622) | = | -6.29421222 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Junction K-8 | -51 | ||||||||||||
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 | 1552 | 2422 | - | 2436 | = | -14 | * | (63 | / | 625) | = | -1.4112 | ||
| 4 | 1553 | 2458 | - | 2485 | = | -27 | * | (64 | / | 625) | = | -2.7648 | ||
| 5 | 1555 | 2470 | - | 2528 | = | -58 | * | (68 | / | 625) | = | -6.3104 | ||
| 6 | 1557 | 2479 | - | 2552 | = | -73 | * | (132 | / | 625) | = | -15.4176 | ||
| 7 | 1559 | 2510 | - | 2567 | = | -57 | * | (140 | / | 625) | = | -12.768 | ||
| 8 | 1561 | 2518 | - | 2586 | = | -68 | * | (158 | / | 625) | = | -17.1904 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Junction K-8 | -56 | ||||||||||||
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 | 1567 | 2398 | - | 2436 | = | -38 | * | (57 | / | 644) | = | -3.36335401 | ||
| 4 | 1569 | 2456 | - | 2485 | = | -29 | * | (54 | / | 644) | = | -2.431677 | ||
| 5 | 1571 | 2491 | - | 2528 | = | -37 | * | (60 | / | 644) | = | -3.44720494 | ||
| 6 | 1573 | 2520 | - | 2552 | = | -32 | * | (188 | / | 644) | = | -9.34161488 | ||
| 7 | 1575 | 2471 | - | 2567 | = | -96 | * | (138 | / | 644) | = | -20.57142854 | ||
| 8 | 1577 | 2526 | - | 2586 | = | -60 | * | (147 | / | 644) | = | -13.69565214 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Junction K-8 | -53 | ||||||||||||
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 | 1594 | 2400 | - | 2436 | = | -36 | * | (65 | / | 688) | = | -3.40116278 | ||
| 4 | 1595 | 2425 | - | 2485 | = | -60 | * | (61 | / | 688) | = | -5.3197674 | ||
| 5 | 1596 | 2497 | - | 2528 | = | -31 | * | (59 | / | 688) | = | -2.6584302 | ||
| 6 | 1597 | 2506 | - | 2552 | = | -46 | * | (179 | / | 688) | = | -11.96802323 | ||
| 7 | 1598 | 2517 | - | 2567 | = | -50 | * | (188 | / | 688) | = | -13.66279065 | ||
| 8 | 1599 | 2484 | - | 2586 | = | -102 | * | (136 | / | 688) | = | -20.16279064 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Junction K-8 | -57 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -60 | -51 | -56 | -53 | -57 | -277.0 | -55.4 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -46.4
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -64.4
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 | 65% | 63% | 68% | 65% | 62% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Livermore Valley Joint Unified school district | County of Alameda
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.
Junction K-8 math proficiency
Zero+ meets standard.
60% less $meal
58% less $meal
60% less $meal
62% less $meal
56% 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.