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	330199	2417	-	2436	=	-19	*	(70	/	269)	=	-4.94423791
4	330200	2425	-	2485	=	-60	*	(71	/	269)	=	-15.8364312
5	330203	2464	-	2528	=	-64	*	(58	/	269)	=	-13.79925645
6	330204	2455	-	2552	=	-97	*	(70	/	269)	=	-25.24163566
Step 4	SUM Weighted Distance From Standard to get 2015 Difference From Standard for Powers-Ginsburg Elementary											-60

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	9854	2413	-	2436	=	-23	*	(73	/	287)	=	-5.8501742
4	9856	2448	-	2485	=	-37	*	(76	/	287)	=	-9.79790939
5	9858	2449	-	2528	=	-79	*	(74	/	287)	=	-20.36933796
6	9859	2467	-	2552	=	-85	*	(64	/	287)	=	-18.95470378
Step 4	SUM Weighted Distance From Standard to get 2016 Difference From Standard for Powers-Ginsburg Elementary											-55

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	10181	2399	-	2436	=	-37	*	(60	/	285)	=	-7.78947366
4	10184	2432	-	2485	=	-53	*	(77	/	285)	=	-14.31929821
5	10186	2444	-	2528	=	-84	*	(76	/	285)	=	-22.39999994
6	10187	2458	-	2552	=	-94	*	(72	/	285)	=	-23.74736833
Step 4	SUM Weighted Distance From Standard to get 2017 Difference From Standard for Powers-Ginsburg Elementary											-68

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	10199	2429	-	2436	=	-7	*	(61	/	269)	=	-1.58736059
4	10201	2434	-	2485	=	-51	*	(58	/	269)	=	-10.99628248
5	10203	2473	-	2528	=	-55	*	(77	/	269)	=	-15.74349442
6	10205	2511	-	2552	=	-41	*	(73	/	269)	=	-11.12639402
Step 4	SUM Weighted Distance From Standard to get 2018 Difference From Standard for Powers-Ginsburg Elementary											-39

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	10280	2425	-	2436	=	-11	*	(64	/	259)	=	-2.71814672
4	10281	2455	-	2485	=	-30	*	(62	/	259)	=	-7.18146717
5	10282	2460	-	2528	=	-68	*	(57	/	259)	=	-14.96525096
6	10283	2512	-	2552	=	-40	*	(76	/	259)	=	-11.73745172
Step 4	SUM Weighted Distance From Standard to get 2019 Difference From Standard for Powers-Ginsburg Elementary											-37

Last steps

Compute the average

2015	2016	2017	2018	2019	Sum	Average
-60	-55	-68	-39	-37	-259.0	-51.8

Compute the Upper Control Limit

Simply compute the standard deviation and multiply by 3 and add to the average: -12.8

Compute the Lower Control Limit

Simply compute the standard deviation and multiply by 3 and subtract from the average: -90.8

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	89%	88%	87%	88%	84%
Data source	2015 data file	2016 data file	2017 data file	2018 data file	2019 data file