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	760401	2405	-	2436	=	-31	*	(179	/	566)	=	-9.8038869
4	760402	2433	-	2485	=	-52	*	(205	/	566)	=	-18.83392222
5	760405	2477	-	2528	=	-51	*	(182	/	566)	=	-16.39929327
Step 4	SUM Weighted Distance From Standard to get 2015 Difference From Standard for Dooley Elementary											-45

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	23876	2404	-	2436	=	-32	*	(174	/	555)	=	-10.03243242
4	23878	2439	-	2485	=	-46	*	(174	/	555)	=	-14.4216216
5	23881	2479	-	2528	=	-49	*	(207	/	555)	=	-18.27567563
Step 4	SUM Weighted Distance From Standard to get 2016 Difference From Standard for Dooley Elementary											-43

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	24375	2437	-	2436	=	1	*	(171	/	501)	=	0.34131737
4	24378	2454	-	2485	=	-31	*	(168	/	501)	=	-10.39520957
5	24379	2485	-	2528	=	-43	*	(162	/	501)	=	-13.9041916
Step 4	SUM Weighted Distance From Standard to get 2017 Difference From Standard for Dooley Elementary											-24

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	24394	2440	-	2436	=	4	*	(166	/	505)	=	1.31485148
4	24396	2472	-	2485	=	-13	*	(167	/	505)	=	-4.2990099
5	24398	2453	-	2528	=	-75	*	(172	/	505)	=	-25.54455443
Step 4	SUM Weighted Distance From Standard to get 2018 Difference From Standard for Dooley Elementary											-29

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	24564	2433	-	2436	=	-3	*	(152	/	488)	=	-0.93442623
4	24565	2475	-	2485	=	-10	*	(164	/	488)	=	-3.36065573
5	24566	2502	-	2528	=	-26	*	(172	/	488)	=	-9.16393442
Step 4	SUM Weighted Distance From Standard to get 2019 Difference From Standard for Dooley Elementary											-13

Last steps

Compute the average

2015	2016	2017	2018	2019	Sum	Average
-45	-43	-24	-29	-13	-154.0	-30.8

Compute the Upper Control Limit

Simply compute the standard deviation and multiply by 3 and add to the average: 8.2

Compute the Lower Control Limit

Simply compute the standard deviation and multiply by 3 and subtract from the average: -69.8

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	93%	91%	92%	91%	92%
Data source	2015 data file	2016 data file	2017 data file	2018 data file	2019 data file