Lake Balboa College Preparatory Magnet K-12 (Data source)
Source data for Lake Balboa College Preparatory Magnet K-12
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 | 856669 | 2423 | - | 2436 | = | -13 | * | (44 | / | 378) | = | -1.51322751 | ||
| 4 | 856670 | 2476 | - | 2485 | = | -9 | * | (46 | / | 378) | = | -1.09523809 | ||
| 5 | 856673 | 2462 | - | 2528 | = | -66 | * | (52 | / | 378) | = | -9.07936504 | ||
| 6 | 856674 | 2562 | - | 2552 | = | 10 | * | (71 | / | 378) | = | 1.87830687 | ||
| 7 | 856677 | 2552 | - | 2567 | = | -15 | * | (64 | / | 378) | = | -2.53968254 | ||
| 8 | 856678 | 2618 | - | 2586 | = | 32 | * | (51 | / | 378) | = | 4.31746029 | ||
| 11 | 856681 | 2562 | - | 2628 | = | -66 | * | (50 | / | 378) | = | -8.73015871 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Lake Balboa College Preparatory Magnet K-12 | -17 | ||||||||||||
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 | 27106 | 2439 | - | 2436 | = | 3 | * | (41 | / | 371) | = | 0.33153639 | ||
| 4 | 27108 | 2477 | - | 2485 | = | -8 | * | (52 | / | 371) | = | -1.1212938 | ||
| 5 | 27111 | 2483 | - | 2528 | = | -45 | * | (50 | / | 371) | = | -6.06469001 | ||
| 6 | 27113 | 2538 | - | 2552 | = | -14 | * | (54 | / | 371) | = | -2.03773584 | ||
| 7 | 27115 | 2576 | - | 2567 | = | 9 | * | (63 | / | 371) | = | 1.52830188 | ||
| 8 | 27117 | 2572 | - | 2586 | = | -14 | * | (66 | / | 371) | = | -2.49056604 | ||
| 11 | 27118 | 2657 | - | 2628 | = | 29 | * | (45 | / | 371) | = | 3.5175202 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Lake Balboa College Preparatory Magnet K-12 | -6 | ||||||||||||
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 | 27686 | 2420 | - | 2436 | = | -16 | * | (45 | / | 370) | = | -1.94594594 | ||
| 4 | 27688 | 2477 | - | 2485 | = | -8 | * | (52 | / | 370) | = | -1.12432432 | ||
| 5 | 27689 | 2471 | - | 2528 | = | -57 | * | (53 | / | 370) | = | -8.16486485 | ||
| 6 | 27691 | 2534 | - | 2552 | = | -18 | * | (60 | / | 370) | = | -2.91891892 | ||
| 7 | 27693 | 2577 | - | 2567 | = | 10 | * | (55 | / | 370) | = | 1.48648648 | ||
| 8 | 27695 | 2589 | - | 2586 | = | 3 | * | (62 | / | 370) | = | 0.5027027 | ||
| 11 | 27697 | 2633 | - | 2628 | = | 5 | * | (43 | / | 370) | = | 0.58108108 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Lake Balboa College Preparatory Magnet K-12 | -12 | ||||||||||||
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 | 27732 | 2436 | - | 2436 | = | 0 | * | (47 | / | 368) | = | 0.0 | ||
| 4 | 27734 | 2468 | - | 2485 | = | -17 | * | (51 | / | 368) | = | -2.35597825 | ||
| 5 | 27736 | 2502 | - | 2528 | = | -26 | * | (58 | / | 368) | = | -4.09782607 | ||
| 6 | 27739 | 2535 | - | 2552 | = | -17 | * | (67 | / | 368) | = | -3.09510869 | ||
| 7 | 27740 | 2533 | - | 2567 | = | -34 | * | (61 | / | 368) | = | -5.63586955 | ||
| 8 | 27742 | 2563 | - | 2586 | = | -23 | * | (57 | / | 368) | = | -3.56249999 | ||
| 11 | 27745 | 2712 | - | 2628 | = | 84 | * | (27 | / | 368) | = | 6.16304346 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Lake Balboa College Preparatory Magnet K-12 | -13 | ||||||||||||
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 | 27918 | 2431 | - | 2436 | = | -5 | * | (42 | / | 367) | = | -0.57220708 | ||
| 4 | 27919 | 2486 | - | 2485 | = | 1 | * | (56 | / | 367) | = | 0.15258856 | ||
| 5 | 27920 | 2485 | - | 2528 | = | -43 | * | (54 | / | 367) | = | -6.32697545 | ||
| 6 | 27921 | 2534 | - | 2552 | = | -18 | * | (59 | / | 367) | = | -2.89373296 | ||
| 7 | 27922 | 2553 | - | 2567 | = | -14 | * | (65 | / | 367) | = | -2.47956402 | ||
| 8 | 27923 | 2576 | - | 2586 | = | -10 | * | (62 | / | 367) | = | -1.68937329 | ||
| 11 | 27924 | 2604 | - | 2628 | = | -24 | * | (29 | / | 367) | = | -1.89645775 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Lake Balboa College Preparatory Magnet K-12 | -16 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -17 | -6 | -12 | -13 | -16 | -64.0 | -12.8 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -0.8
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -24.8
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 | 61% | 69% | 75% | 77% | 76% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Los Angeles Unified school district | County of Los Angeles
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.
Lake Balboa College Preparatory Magnet K-12 math proficiency
Zero+ meets standard.
50% less $meal
53% less $meal
57% less $meal
66% less $meal
67% 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.