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 |
2373723 |
2491 |
- |
2436 |
= |
55 |
* |
(43 |
/ |
137)
|
= |
17.26277372 |
| 4 |
2373724 |
2511 |
- |
2485 |
= |
26 |
* |
(45 |
/ |
137)
|
= |
8.54014598 |
| 5 |
2373727 |
2513 |
- |
2528 |
= |
-15 |
* |
(49 |
/ |
137)
|
= |
-5.3649635 |
| Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Sutro Elementary
|
20 |
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 |
72508 |
2481 |
- |
2436 |
= |
45 |
* |
(43 |
/ |
129)
|
= |
14.99999999 |
| 4 |
72510 |
2510 |
- |
2485 |
= |
25 |
* |
(44 |
/ |
129)
|
= |
8.52713178 |
| 5 |
72511 |
2518 |
- |
2528 |
= |
-10 |
* |
(42 |
/ |
129)
|
= |
-3.25581395 |
| Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Sutro Elementary
|
20 |
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 |
74481 |
2446 |
- |
2436 |
= |
10 |
* |
(42 |
/ |
131)
|
= |
3.20610687 |
| 4 |
74483 |
2504 |
- |
2485 |
= |
19 |
* |
(44 |
/ |
131)
|
= |
6.38167938 |
| 5 |
74486 |
2529 |
- |
2528 |
= |
1 |
* |
(45 |
/ |
131)
|
= |
0.34351145 |
| Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Sutro Elementary
|
10 |
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 |
74656 |
2475 |
- |
2436 |
= |
39 |
* |
(42 |
/ |
126)
|
= |
12.99999999 |
| 4 |
74657 |
2501 |
- |
2485 |
= |
16 |
* |
(47 |
/ |
126)
|
= |
5.96825397 |
| 5 |
74660 |
2550 |
- |
2528 |
= |
22 |
* |
(37 |
/ |
126)
|
= |
6.46031745 |
| Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Sutro Elementary
|
25 |
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 |
75181 |
2488 |
- |
2436 |
= |
52 |
* |
(43 |
/ |
135)
|
= |
16.56296294 |
| 4 |
75182 |
2504 |
- |
2485 |
= |
19 |
* |
(41 |
/ |
135)
|
= |
5.77037036 |
| 5 |
75183 |
2529 |
- |
2528 |
= |
1 |
* |
(51 |
/ |
135)
|
= |
0.37777778 |
| Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Sutro Elementary
|
23 |
Last steps
Compute the average
| 2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
|
20
|
20
|
10
|
25
|
23
|
98.0 |
19.6 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 34.6
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: 4.6
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:
