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	327284	2402	-	2436	=	-34	*	(41	/	156)	=	-8.93589741
4	327285	2395	-	2485	=	-90	*	(40	/	156)	=	-23.07692304
5	327288	2382	-	2528	=	-146	*	(34	/	156)	=	-31.82051268
6	327289	2437	-	2552	=	-115	*	(41	/	156)	=	-30.22435888
Step 4	SUM Weighted Distance From Standard to get 2015 Difference From Standard for Kirk Elementary											-94

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	9763	2400	-	2436	=	-36	*	(36	/	158)	=	-8.20253164
4	9766	2429	-	2485	=	-56	*	(44	/	158)	=	-15.59493667
5	9767	2432	-	2528	=	-96	*	(44	/	158)	=	-26.73417715
6	9770	2416	-	2552	=	-136	*	(34	/	158)	=	-29.26582273
Step 4	SUM Weighted Distance From Standard to get 2016 Difference From Standard for Kirk Elementary											-80

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	10091	2383	-	2436	=	-53	*	(46	/	168)	=	-14.51190472
4	10093	2415	-	2485	=	-70	*	(32	/	168)	=	-13.3333333
5	10096	2417	-	2528	=	-111	*	(41	/	168)	=	-27.08928571
6	10098	2442	-	2552	=	-110	*	(49	/	168)	=	-32.08333326
Step 4	SUM Weighted Distance From Standard to get 2017 Difference From Standard for Kirk Elementary											-87

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	10109	2366	-	2436	=	-70	*	(54	/	179)	=	-21.11731839
4	10112	2401	-	2485	=	-84	*	(47	/	179)	=	-22.05586589
5	10113	2434	-	2528	=	-94	*	(37	/	179)	=	-19.43016754
6	10116	2481	-	2552	=	-71	*	(41	/	179)	=	-16.26256981
Step 4	SUM Weighted Distance From Standard to get 2018 Difference From Standard for Kirk Elementary											-79

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	10190	2391	-	2436	=	-45	*	(41	/	172)	=	-10.72674419
4	10191	2424	-	2485	=	-61	*	(48	/	172)	=	-17.02325579
5	10192	2417	-	2528	=	-111	*	(43	/	172)	=	-27.75
6	10193	2434	-	2552	=	-118	*	(40	/	172)	=	-27.4418604
Step 4	SUM Weighted Distance From Standard to get 2019 Difference From Standard for Kirk Elementary											-83

Last steps

Compute the average

2015	2016	2017	2018	2019	Sum	Average
-94	-80	-87	-79	-83	-423.0	-84.6

Compute the Upper Control Limit

Simply compute the standard deviation and multiply by 3 and add to the average: -66.6

Compute the Lower Control Limit

Simply compute the standard deviation and multiply by 3 and subtract from the average: -102.6

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:

	2015	2016	2017	2018	2019
Percent	97%	98%	99%	99%	96%
Data source	2015 data file	2016 data file	2017 data file	2018 data file	2019 data file