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	325660	2359	-	2436	=	-77	*	(71	/	261)	=	-20.94636013
4	325661	2384	-	2485	=	-101	*	(63	/	261)	=	-24.37931031
5	325664	2399	-	2528	=	-129	*	(77	/	261)	=	-38.05747125
6	325665	2406	-	2552	=	-146	*	(50	/	261)	=	-27.96934863
Step 4	SUM Weighted Distance From Standard to get 2015 Difference From Standard for Heaton Elementary											-111

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	9713	2383	-	2436	=	-53	*	(89	/	285)	=	-16.55087715
4	9716	2390	-	2485	=	-95	*	(77	/	285)	=	-25.66666661
5	9718	2391	-	2528	=	-137	*	(59	/	285)	=	-28.36140339
6	9719	2380	-	2552	=	-172	*	(60	/	285)	=	-36.21052618
Step 4	SUM Weighted Distance From Standard to get 2016 Difference From Standard for Heaton Elementary											-107

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	10042	2372	-	2436	=	-64	*	(101	/	296)	=	-21.83783782
4	10044	2380	-	2485	=	-105	*	(75	/	296)	=	-26.60472969
5	10045	2422	-	2528	=	-106	*	(72	/	296)	=	-25.78378376
6	10047	2430	-	2552	=	-122	*	(48	/	296)	=	-19.78378376
Step 4	SUM Weighted Distance From Standard to get 2017 Difference From Standard for Heaton Elementary											-94

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	10060	2374	-	2436	=	-62	*	(85	/	304)	=	-17.33552631
4	10062	2412	-	2485	=	-73	*	(89	/	304)	=	-21.37171046
5	10064	2422	-	2528	=	-106	*	(67	/	304)	=	-23.36184202
6	10066	2436	-	2552	=	-116	*	(63	/	304)	=	-24.03947367
Step 4	SUM Weighted Distance From Standard to get 2018 Difference From Standard for Heaton Elementary											-86

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	10140	2354	-	2436	=	-82	*	(91	/	294)	=	-25.38095234
4	10141	2396	-	2485	=	-89	*	(75	/	294)	=	-22.70408156
5	10142	2431	-	2528	=	-97	*	(79	/	294)	=	-26.06462575
6	10143	2405	-	2552	=	-147	*	(49	/	294)	=	-24.4999999
Step 4	SUM Weighted Distance From Standard to get 2019 Difference From Standard for Heaton Elementary											-99

Last steps

Compute the average

2015	2016	2017	2018	2019	Sum	Average
-111	-107	-94	-86	-99	-497.0	-99.4

Compute the Upper Control Limit

Simply compute the standard deviation and multiply by 3 and add to the average: -69.4

Compute the Lower Control Limit

Simply compute the standard deviation and multiply by 3 and subtract from the average: -129.4

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	96%	94%	95%	96%	95%
Data source	2015 data file	2016 data file	2017 data file	2018 data file	2019 data file