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	1437192	2400	-	2436	=	-36	*	(63	/	208)	=	-10.90384614
4	1437193	2480	-	2485	=	-5	*	(77	/	208)	=	-1.85096154
5	1437196	2475	-	2528	=	-53	*	(68	/	208)	=	-17.32692303
Step 4	SUM Weighted Distance From Standard to get 2015 Difference From Standard for Del Obispo Elementary											-30

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	45249	2422	-	2436	=	-14	*	(68	/	212)	=	-4.49056602
4	45251	2455	-	2485	=	-30	*	(64	/	212)	=	-9.05660376
5	45253	2523	-	2528	=	-5	*	(80	/	212)	=	-1.88679245
Step 4	SUM Weighted Distance From Standard to get 2016 Difference From Standard for Del Obispo Elementary											-15

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	46459	2424	-	2436	=	-12	*	(51	/	185)	=	-3.3081081
4	46460	2452	-	2485	=	-33	*	(71	/	185)	=	-12.66486484
5	46462	2504	-	2528	=	-24	*	(63	/	185)	=	-8.17297296
Step 4	SUM Weighted Distance From Standard to get 2017 Difference From Standard for Del Obispo Elementary											-24

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	46469	2423	-	2436	=	-13	*	(61	/	199)	=	-3.98492462
4	46470	2471	-	2485	=	-14	*	(60	/	199)	=	-4.22110552
5	46473	2511	-	2528	=	-17	*	(78	/	199)	=	-6.66331657
Step 4	SUM Weighted Distance From Standard to get 2018 Difference From Standard for Del Obispo Elementary											-15

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	46651	2410	-	2436	=	-26	*	(70	/	187)	=	-9.7326203
4	46652	2447	-	2485	=	-38	*	(61	/	187)	=	-12.3957219
5	46653	2511	-	2528	=	-17	*	(56	/	187)	=	-5.09090908
Step 4	SUM Weighted Distance From Standard to get 2019 Difference From Standard for Del Obispo Elementary											-27

Last steps

Compute the average

2015	2016	2017	2018	2019	Sum	Average
-30	-15	-24	-15	-27	-111.0	-22.2

Compute the Upper Control Limit

Simply compute the standard deviation and multiply by 3 and add to the average: -4.2

Compute the Lower Control Limit

Simply compute the standard deviation and multiply by 3 and subtract from the average: -40.2

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	48%	46%	54%	60%	59%
Data source	2015 data file	2016 data file	2017 data file	2018 data file	2019 data file