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 |
975567 |
2390 |
- |
2436 |
= |
-46 |
* |
(62 |
/ |
181)
|
= |
-15.75690606 |
| 4 |
975568 |
2454 |
- |
2485 |
= |
-31 |
* |
(55 |
/ |
181)
|
= |
-9.41988949 |
| 5 |
975571 |
2486 |
- |
2528 |
= |
-42 |
* |
(64 |
/ |
181)
|
= |
-14.85082872 |
| Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Westminster Avenue Elementary
|
-40 |
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 |
30875 |
2407 |
- |
2436 |
= |
-29 |
* |
(56 |
/ |
180)
|
= |
-9.02222222 |
| 4 |
30877 |
2433 |
- |
2485 |
= |
-52 |
* |
(59 |
/ |
180)
|
= |
-17.0444444 |
| 5 |
30879 |
2452 |
- |
2528 |
= |
-76 |
* |
(65 |
/ |
180)
|
= |
-27.44444444 |
| Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Westminster Avenue Elementary
|
-54 |
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 |
31440 |
2406 |
- |
2436 |
= |
-30 |
* |
(54 |
/ |
178)
|
= |
-9.10112358 |
| 4 |
31441 |
2456 |
- |
2485 |
= |
-29 |
* |
(61 |
/ |
178)
|
= |
-9.93820224 |
| 5 |
31444 |
2449 |
- |
2528 |
= |
-79 |
* |
(63 |
/ |
178)
|
= |
-27.96067414 |
| Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Westminster Avenue Elementary
|
-47 |
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 |
31487 |
2400 |
- |
2436 |
= |
-36 |
* |
(66 |
/ |
198)
|
= |
-11.99999999 |
| 4 |
31489 |
2456 |
- |
2485 |
= |
-29 |
* |
(72 |
/ |
198)
|
= |
-10.54545453 |
| 5 |
31491 |
2487 |
- |
2528 |
= |
-41 |
* |
(60 |
/ |
198)
|
= |
-12.42424242 |
| Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Westminster Avenue Elementary
|
-35 |
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 |
31664 |
2422 |
- |
2436 |
= |
-14 |
* |
(72 |
/ |
208)
|
= |
-4.84615384 |
| 4 |
31665 |
2458 |
- |
2485 |
= |
-27 |
* |
(64 |
/ |
208)
|
= |
-8.30769229 |
| 5 |
31666 |
2491 |
- |
2528 |
= |
-37 |
* |
(72 |
/ |
208)
|
= |
-12.8076923 |
| Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Westminster Avenue Elementary
|
-26 |
Last steps
Compute the average
| 2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
|
-40
|
-54
|
-47
|
-35
|
-26
|
-202.0 |
-40.4 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -10.4
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -70.4
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:
