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	2224016	2407	-	2436	=	-29	*	(50	/	300)	=	-4.83333331
4	2224019	2419	-	2485	=	-66	*	(66	/	300)	=	-14.52
5	2224020	2452	-	2528	=	-76	*	(48	/	300)	=	-12.16
6	2224023	2509	-	2552	=	-43	*	(50	/	300)	=	-7.16666664
7	2224024	2481	-	2567	=	-86	*	(51	/	300)	=	-14.62
8	2224027	2528	-	2586	=	-58	*	(35	/	300)	=	-6.76666663
Step 4	SUM Weighted Distance From Standard to get 2015 Difference From Standard for Iftin Charter											-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	68210	2434	-	2436	=	-2	*	(47	/	258)	=	-0.36434108
4	68211	2439	-	2485	=	-46	*	(43	/	258)	=	-7.66666664
5	68214	2434	-	2528	=	-94	*	(50	/	258)	=	-18.21705421
6	68215	2513	-	2552	=	-39	*	(40	/	258)	=	-6.0465116
7	68218	2515	-	2567	=	-52	*	(39	/	258)	=	-7.86046508
8	68219	2521	-	2586	=	-65	*	(39	/	258)	=	-9.82558135
Step 4	SUM Weighted Distance From Standard to get 2016 Difference From Standard for Iftin Charter											-50

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	70027	2392	-	2436	=	-44	*	(42	/	276)	=	-6.69565217
4	70028	2444	-	2485	=	-41	*	(48	/	276)	=	-7.13043476
5	70031	2439	-	2528	=	-89	*	(48	/	276)	=	-15.47826083
6	70033	2478	-	2552	=	-74	*	(59	/	276)	=	-15.81884051
7	70034	2467	-	2567	=	-100	*	(38	/	276)	=	-13.7681159
8	70036	2492	-	2586	=	-94	*	(41	/	276)	=	-13.96376806
Step 4	SUM Weighted Distance From Standard to get 2017 Difference From Standard for Iftin Charter											-73

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	70185	2417	-	2436	=	-19	*	(30	/	195)	=	-2.92307691
4	70187	2429	-	2485	=	-56	*	(27	/	195)	=	-7.75384613
5	70189	2502	-	2528	=	-26	*	(35	/	195)	=	-4.66666665
6	70191	2482	-	2552	=	-70	*	(35	/	195)	=	-12.56410253
7	70193	2449	-	2567	=	-118	*	(41	/	195)	=	-24.81025638
8	70195	2426	-	2586	=	-160	*	(27	/	195)	=	-22.15384608
Step 4	SUM Weighted Distance From Standard to get 2018 Difference From Standard for Iftin Charter											-75

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	70704	2370	-	2436	=	-66	*	(38	/	224)	=	-11.19642856
4	70705	2418	-	2485	=	-67	*	(31	/	224)	=	-9.27232142
5	70706	2454	-	2528	=	-74	*	(33	/	224)	=	-10.90178567
6	70707	2544	-	2552	=	-8	*	(37	/	224)	=	-1.32142857
7	70708	2486	-	2567	=	-81	*	(39	/	224)	=	-14.1026785
8	70709	2507	-	2586	=	-79	*	(46	/	224)	=	-16.22321422
Step 4	SUM Weighted Distance From Standard to get 2019 Difference From Standard for Iftin Charter											-63

Last steps

Compute the average

2015	2016	2017	2018	2019	Sum	Average
-60	-50	-73	-75	-63	-321.0	-64.2

Compute the Upper Control Limit

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

Compute the Lower Control Limit

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

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	98%	98%	89%	86%	84%
Data source	2015 data file	2016 data file	2017 data file	2018 data file	2019 data file