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	314323	2399	-	2436	=	-37	*	(133	/	477)	=	-10.31656182
4	314324	2422	-	2485	=	-63	*	(128	/	477)	=	-16.90566035
5	314327	2468	-	2528	=	-60	*	(103	/	477)	=	-12.95597484
6	314328	2472	-	2552	=	-80	*	(113	/	477)	=	-18.95178192
Step 4	SUM Weighted Distance From Standard to get 2015 Difference From Standard for Akira Yokomi Elementary											-59

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	9380	2451	-	2436	=	15	*	(120	/	468)	=	3.84615384
4	9381	2459	-	2485	=	-26	*	(132	/	468)	=	-7.33333333
5	9384	2454	-	2528	=	-74	*	(118	/	468)	=	-18.65811965
6	9385	2499	-	2552	=	-53	*	(98	/	468)	=	-11.09829058
Step 4	SUM Weighted Distance From Standard to get 2016 Difference From Standard for Akira Yokomi Elementary											-33

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	9701	2434	-	2436	=	-2	*	(121	/	487)	=	-0.49691992
4	9703	2483	-	2485	=	-2	*	(127	/	487)	=	-0.52156057
5	9705	2477	-	2528	=	-51	*	(122	/	487)	=	-12.7761807
6	9707	2476	-	2552	=	-76	*	(117	/	487)	=	-18.25872686
Step 4	SUM Weighted Distance From Standard to get 2017 Difference From Standard for Akira Yokomi Elementary											-32

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	9709	2430	-	2436	=	-6	*	(122	/	476)	=	-1.53781513
4	9712	2464	-	2485	=	-21	*	(121	/	476)	=	-5.33823528
5	9713	2500	-	2528	=	-28	*	(121	/	476)	=	-7.11764704
6	9716	2507	-	2552	=	-45	*	(112	/	476)	=	-10.58823527
Step 4	SUM Weighted Distance From Standard to get 2018 Difference From Standard for Akira Yokomi 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	9800	2462	-	2436	=	26	*	(110	/	463)	=	6.17710582
4	9801	2503	-	2485	=	18	*	(120	/	463)	=	4.66522677
5	9802	2504	-	2528	=	-24	*	(119	/	463)	=	-6.16846651
6	9803	2523	-	2552	=	-29	*	(114	/	463)	=	-7.14038876
Step 4	SUM Weighted Distance From Standard to get 2019 Difference From Standard for Akira Yokomi Elementary											-2

Last steps

Compute the average

2015	2016	2017	2018	2019	Sum	Average
-59	-33	-32	-25	-2	-151.0	-30.2

Compute the Upper Control Limit

Simply compute the standard deviation and multiply by 3 and add to the average: 29.8

Compute the Lower Control Limit

Simply compute the standard deviation and multiply by 3 and subtract from the average: -90.2

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	84%	85%	87%	87%	88%
Data source	2015 data file	2016 data file	2017 data file	2018 data file	2019 data file