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	2377773	2425	-	2436	=	-11	*	(58	/	356)	=	-1.79213483
4	2377774	2422	-	2485	=	-63	*	(64	/	356)	=	-11.32584264
5	2377777	2472	-	2528	=	-56	*	(63	/	356)	=	-9.91011235
6	2377778	2508	-	2552	=	-44	*	(56	/	356)	=	-6.92134828
7	2377781	2494	-	2567	=	-73	*	(57	/	356)	=	-11.68820221
8	2377782	2556	-	2586	=	-30	*	(58	/	356)	=	-4.88764044
Step 4	SUM Weighted Distance From Standard to get 2015 Difference From Standard for Buena Vista/ Horace Mann K-8											-47

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	72614	2375	-	2436	=	-61	*	(63	/	364)	=	-10.5576923
4	72616	2437	-	2485	=	-48	*	(65	/	364)	=	-8.57142854
5	72617	2444	-	2528	=	-84	*	(65	/	364)	=	-14.99999995
6	72620	2492	-	2552	=	-60	*	(61	/	364)	=	-10.05494502
7	72622	2516	-	2567	=	-51	*	(50	/	364)	=	-7.00549449
8	72624	2534	-	2586	=	-52	*	(60	/	364)	=	-8.57142853
Step 4	SUM Weighted Distance From Standard to get 2016 Difference From Standard for Buena Vista/ Horace Mann K-8											-60

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	74586	2383	-	2436	=	-53	*	(61	/	366)	=	-8.8333333
4	74588	2432	-	2485	=	-53	*	(63	/	366)	=	-9.12295079
5	74590	2466	-	2528	=	-62	*	(63	/	366)	=	-10.67213111
6	74592	2464	-	2552	=	-88	*	(63	/	366)	=	-15.14754094
7	74594	2500	-	2567	=	-67	*	(63	/	366)	=	-11.53278685
8	74596	2537	-	2586	=	-49	*	(53	/	366)	=	-7.09562841
Step 4	SUM Weighted Distance From Standard to get 2017 Difference From Standard for Buena Vista/ Horace Mann K-8											-62

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	74760	2375	-	2436	=	-61	*	(66	/	374)	=	-10.76470587
4	74761	2447	-	2485	=	-38	*	(63	/	374)	=	-6.40106949
5	74764	2437	-	2528	=	-91	*	(62	/	374)	=	-15.08556149
6	74765	2513	-	2552	=	-39	*	(58	/	374)	=	-6.04812831
7	74768	2499	-	2567	=	-68	*	(59	/	374)	=	-10.72727268
8	74770	2552	-	2586	=	-34	*	(66	/	374)	=	-5.99999999
Step 4	SUM Weighted Distance From Standard to get 2018 Difference From Standard for Buena Vista/ Horace Mann K-8											-55

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	75288	2372	-	2436	=	-64	*	(58	/	355)	=	-10.45633798
4	75289	2411	-	2485	=	-74	*	(66	/	355)	=	-13.75774641
5	75290	2471	-	2528	=	-57	*	(64	/	355)	=	-10.27605633
6	75291	2459	-	2552	=	-93	*	(56	/	355)	=	-14.67042245
7	75292	2532	-	2567	=	-35	*	(62	/	355)	=	-6.11267605
8	75293	2519	-	2586	=	-67	*	(49	/	355)	=	-9.24788732
Step 4	SUM Weighted Distance From Standard to get 2019 Difference From Standard for Buena Vista/ Horace Mann K-8											-65

Last steps

Compute the average

2015	2016	2017	2018	2019	Sum	Average
-47	-60	-62	-55	-65	-289.0	-57.8

Compute the Upper Control Limit

Simply compute the standard deviation and multiply by 3 and add to the average: -36.8

Compute the Lower Control Limit

Simply compute the standard deviation and multiply by 3 and subtract from the average: -78.8

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	72%	62%	58%	59%	64%
Data source	2015 data file	2016 data file	2017 data file	2018 data file	2019 data file