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	2131225	2422	-	2436	=	-14	*	(80	/	267)	=	-4.19475655
4	2131228	2431	-	2485	=	-54	*	(60	/	267)	=	-12.13483145
5	2131229	2482	-	2528	=	-46	*	(65	/	267)	=	-11.19850183
6	2131232	2520	-	2552	=	-32	*	(62	/	267)	=	-7.43071158
Step 4	SUM Weighted Distance From Standard to get 2015 Difference From Standard for Halecrest Elementary											-35

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	65435	2448	-	2436	=	12	*	(67	/	279)	=	2.88172043
4	65437	2478	-	2485	=	-7	*	(85	/	279)	=	-2.13261649
5	65438	2466	-	2528	=	-62	*	(62	/	279)	=	-13.77777776
6	65440	2539	-	2552	=	-13	*	(65	/	279)	=	-3.02867383
Step 4	SUM Weighted Distance From Standard to get 2016 Difference From Standard for Halecrest Elementary											-16

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	67251	2427	-	2436	=	-9	*	(66	/	263)	=	-2.25855513
4	67253	2476	-	2485	=	-9	*	(55	/	263)	=	-1.88212928
5	67255	2489	-	2528	=	-39	*	(84	/	263)	=	-12.45627373
6	67257	2491	-	2552	=	-61	*	(58	/	263)	=	-13.45247146
Step 4	SUM Weighted Distance From Standard to get 2017 Difference From Standard for Halecrest Elementary											-30

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	67356	2449	-	2436	=	13	*	(61	/	263)	=	3.01520912
4	67358	2471	-	2485	=	-14	*	(63	/	263)	=	-3.35361216
5	67360	2484	-	2528	=	-44	*	(61	/	263)	=	-10.20532317
6	67362	2524	-	2552	=	-28	*	(78	/	263)	=	-8.30418249
Step 4	SUM Weighted Distance From Standard to get 2018 Difference From Standard for Halecrest Elementary											-19

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	67872	2447	-	2436	=	11	*	(57	/	238)	=	2.63445378
4	67873	2487	-	2485	=	2	*	(58	/	238)	=	0.48739496
5	67874	2495	-	2528	=	-33	*	(64	/	238)	=	-8.87394958
6	67875	2511	-	2552	=	-41	*	(59	/	238)	=	-10.16386552
Step 4	SUM Weighted Distance From Standard to get 2019 Difference From Standard for Halecrest Elementary											-16

Last steps

Compute the average

2015	2016	2017	2018	2019	Sum	Average
-35	-16	-30	-19	-16	-116.0	-23.2

Compute the Upper Control Limit

Simply compute the standard deviation and multiply by 3 and add to the average: 0.8

Compute the Lower Control Limit

Simply compute the standard deviation and multiply by 3 and subtract from the average: -47.2

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	45%	48%	48%	51%	49%
Data source	2015 data file	2016 data file	2017 data file	2018 data file	2019 data file