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	235432	2436	-	2436	=	0	*	(40	/	205)	=	0.0
4	235435	2466	-	2485	=	-19	*	(48	/	205)	=	-4.44878048
5	235436	2483	-	2528	=	-45	*	(67	/	205)	=	-14.70731706
6	235439	2481	-	2552	=	-71	*	(50	/	205)	=	-17.31707317
Step 4	SUM Weighted Distance From Standard to get 2015 Difference From Standard for Harding Elementary											-36

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	6903	2437	-	2436	=	1	*	(55	/	237)	=	0.23206751
4	6905	2493	-	2485	=	8	*	(53	/	237)	=	1.78902953
5	6907	2489	-	2528	=	-39	*	(59	/	237)	=	-9.70886073
6	6909	2488	-	2552	=	-64	*	(70	/	237)	=	-18.90295354
Step 4	SUM Weighted Distance From Standard to get 2016 Difference From Standard for Harding Elementary											-27

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	7116	2473	-	2436	=	37	*	(44	/	220)	=	7.4
4	7118	2483	-	2485	=	-2	*	(56	/	220)	=	-0.50909091
5	7120	2511	-	2528	=	-17	*	(57	/	220)	=	-4.40454545
6	7121	2499	-	2552	=	-53	*	(63	/	220)	=	-15.17727271
Step 4	SUM Weighted Distance From Standard to get 2017 Difference From Standard for Harding Elementary											-13

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	7134	2443	-	2436	=	7	*	(43	/	210)	=	1.43333333
4	7136	2463	-	2485	=	-22	*	(59	/	210)	=	-6.18095236
5	7138	2491	-	2528	=	-37	*	(52	/	210)	=	-9.16190474
6	7140	2522	-	2552	=	-30	*	(56	/	210)	=	-7.99999998
Step 4	SUM Weighted Distance From Standard to get 2018 Difference From Standard for Harding Elementary											-22

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	7180	2458	-	2436	=	22	*	(63	/	220)	=	6.29999999
4	7181	2509	-	2485	=	24	*	(43	/	220)	=	4.69090908
5	7182	2511	-	2528	=	-17	*	(57	/	220)	=	-4.40454545
6	7183	2510	-	2552	=	-42	*	(57	/	220)	=	-10.88181818
Step 4	SUM Weighted Distance From Standard to get 2019 Difference From Standard for Harding Elementary											-4

Last steps

Compute the average

2015	2016	2017	2018	2019	Sum	Average
-36	-27	-13	-22	-4	-102.0	-20.4

Compute the Upper Control Limit

Simply compute the standard deviation and multiply by 3 and add to the average: 15.6

Compute the Lower Control Limit

Simply compute the standard deviation and multiply by 3 and subtract from the average: -56.4

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:

	2015	2016	2017	2018	2019
Percent	31%	31%	33%	38%	35%
Data source	2015 data file	2016 data file	2017 data file	2018 data file	2019 data file