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	323545	2384	-	2436	=	-52	*	(83	/	362)	=	-11.92265188
4	323548	2433	-	2485	=	-52	*	(101	/	362)	=	-14.50828725
5	323549	2464	-	2528	=	-64	*	(87	/	362)	=	-15.38121542
6	323552	2496	-	2552	=	-56	*	(91	/	362)	=	-14.07734804
Step 4	SUM Weighted Distance From Standard to get 2015 Difference From Standard for Easterby Elementary											-56

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	9654	2387	-	2436	=	-49	*	(103	/	360)	=	-14.01944444
4	9656	2427	-	2485	=	-58	*	(88	/	360)	=	-14.17777775
5	9658	2483	-	2528	=	-45	*	(87	/	360)	=	-10.87499997
6	9660	2540	-	2552	=	-12	*	(82	/	360)	=	-2.73333332
Step 4	SUM Weighted Distance From Standard to get 2016 Difference From Standard for Easterby Elementary											-42

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	9981	2409	-	2436	=	-27	*	(97	/	370)	=	-7.07837837
4	9984	2440	-	2485	=	-45	*	(98	/	370)	=	-11.91891888
5	9986	2477	-	2528	=	-51	*	(91	/	370)	=	-12.5432432
6	9988	2500	-	2552	=	-52	*	(84	/	370)	=	-11.8054054
Step 4	SUM Weighted Distance From Standard to get 2017 Difference From Standard for Easterby Elementary											-43

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	10000	2376	-	2436	=	-60	*	(97	/	374)	=	-15.56149728
4	10002	2459	-	2485	=	-26	*	(99	/	374)	=	-6.88235293
5	10004	2484	-	2528	=	-44	*	(94	/	374)	=	-11.05882351
6	10006	2482	-	2552	=	-70	*	(84	/	374)	=	-15.7219251
Step 4	SUM Weighted Distance From Standard to get 2018 Difference From Standard for Easterby Elementary											-49

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	10080	2386	-	2436	=	-50	*	(94	/	387)	=	-12.1447028
4	10081	2462	-	2485	=	-23	*	(87	/	387)	=	-5.17054262
5	10082	2478	-	2528	=	-50	*	(101	/	387)	=	-13.0490956
6	10083	2471	-	2552	=	-81	*	(105	/	387)	=	-21.97674415
Step 4	SUM Weighted Distance From Standard to get 2019 Difference From Standard for Easterby Elementary											-52

Last steps

Compute the average

2015	2016	2017	2018	2019	Sum	Average
-56	-42	-43	-49	-52	-242.0	-48.4

Compute the Upper Control Limit

Simply compute the standard deviation and multiply by 3 and add to the average: -33.4

Compute the Lower Control Limit

Simply compute the standard deviation and multiply by 3 and subtract from the average: -63.4

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	92%	92%	95%	95%	93%
Data source	2015 data file	2016 data file	2017 data file	2018 data file	2019 data file