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	1477265	2419	-	2436	=	-17	*	(64	/	260)	=	-4.18461538
4	1477268	2440	-	2485	=	-45	*	(72	/	260)	=	-12.46153842
5	1477269	2484	-	2528	=	-44	*	(61	/	260)	=	-10.3230769
6	1477272	2522	-	2552	=	-30	*	(63	/	260)	=	-7.26923076
Step 4	SUM Weighted Distance From Standard to get 2015 Difference From Standard for Mitchell Elementary											-34

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	46393	2428	-	2436	=	-8	*	(63	/	249)	=	-2.02409638
4	46394	2472	-	2485	=	-13	*	(59	/	249)	=	-3.08032128
5	46396	2492	-	2528	=	-36	*	(72	/	249)	=	-10.40963854
6	46398	2532	-	2552	=	-20	*	(55	/	249)	=	-4.41767068
Step 4	SUM Weighted Distance From Standard to get 2016 Difference From Standard for Mitchell Elementary											-20

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	47636	2437	-	2436	=	1	*	(61	/	260)	=	0.23461538
4	47638	2475	-	2485	=	-10	*	(63	/	260)	=	-2.42307692
5	47640	2494	-	2528	=	-34	*	(63	/	260)	=	-8.23846153
6	47642	2526	-	2552	=	-26	*	(73	/	260)	=	-7.29999998
Step 4	SUM Weighted Distance From Standard to get 2017 Difference From Standard for Mitchell Elementary											-18

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	47641	2434	-	2436	=	-2	*	(66	/	261)	=	-0.50574713
4	47643	2495	-	2485	=	10	*	(64	/	261)	=	2.45210727
5	47645	2500	-	2528	=	-28	*	(67	/	261)	=	-7.18773944
6	47647	2532	-	2552	=	-20	*	(64	/	261)	=	-4.90421454
Step 4	SUM Weighted Distance From Standard to get 2018 Difference From Standard for Mitchell Elementary											-10

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	47824	2447	-	2436	=	11	*	(60	/	248)	=	2.66129031
4	47825	2494	-	2485	=	9	*	(65	/	248)	=	2.35887097
5	47826	2498	-	2528	=	-30	*	(63	/	248)	=	-7.62096774
6	47827	2511	-	2552	=	-41	*	(60	/	248)	=	-9.9193548
Step 4	SUM Weighted Distance From Standard to get 2019 Difference From Standard for Mitchell Elementary											-13

Last steps

Compute the average

2015	2016	2017	2018	2019	Sum	Average
-34	-20	-18	-10	-13	-95.0	-19.0

Compute the Upper Control Limit

Simply compute the standard deviation and multiply by 3 and add to the average: 8.0

Compute the Lower Control Limit

Simply compute the standard deviation and multiply by 3 and subtract from the average: -46.0

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	83%	81%	82%	85%	79%
Data source	2015 data file	2016 data file	2017 data file	2018 data file	2019 data file