Score Conversion Tables for Commonly Used Tests

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All Wechsler Scales, all Woodcock tests,¹ all Kaufman Tests, Most Tests Published by American Guidance Service, Pro-Ed,² Riverside, the Psychological Corporation, and Many Others

Z-scores (z), Percentile Ranks (PR), Standard Scores (SS) (Mean = 100, s.d. = 15), Scaled Scores (ss) (Mean = 10, s.d. = 3), and Stanines (9)

Z	PR	SS	ss	9	z	PR	SS	ss	9	z	PR	SS	ss	9

+4.00	99.9	160			+1.33	91	120	14	8	-1.40	08	79
+3.93	99.9	159			+1.27	90	119			-1.47	07	78
+3.87	99.9	158			+1.20	88	118			-1.53	06	77		2
+3.80	99.9	157			+1.13	87	117			-1.60	05	76
+3.73	99.9	156			+1.07	86	116			-1.67	05	75	5
+3.67	99.9	155			+1.00	84	115	13	7	-1.73	04	74
+3.60	99.9	154			+0.93	82	114			-1.80	04	73
+3.53	99.9	153			+0.87	81	113			-1.87	03	72
+3.47	99.9	152			+0.80	79	112			-1.93	03	71
+3.40	99.9	151			+0.73	77	111			-2.00	02	70	4
+3.33	99.9	150			+0.67	75	110	12		-2.07	02	69
+3.27	99.9	149			+0.60	73	109			-2.13	02	68
+3.20	99.9	148			+0.53	70	108		6	-2.20	01	67
+3.13	99.9	147			+0.47	68	107			-2.27	01	66
+3.07	99.9	146			+0.40	66	106			-2.33	01	65	3
+3.00	99.9	145	19		+0.33	63	105	11		-2.40	01	64
+2.93	99.8	144			+0.27	61	104			-2.47	01	63
+2.87	99.8	143			+0.20	58	103			-2.53	01	62
+2.80	99.7	142		9	+0.13	55	102			-2.60	0.5	61		1
+2.73	99.7	141			+0.07	53	101			-2.67	0.4	60	2
+2.67	99.6	140	18		0.00	50	100	10	5	-2.73	0.3	59
+2.60	99.5	139			-0.07	47	99			-2.80	0.3	58
+2.53	99	138			-0.13	45	98			-2.87	0.2	57
+2.47	99	137			-0.20	42	97			-2.93	0.2	56
+2.40	99	136			-0.27	39	96			-3.00	0.1	55	1
+2.33	99	135	17		-0.33	37	95	9		-3.07	0.1	54
+2.27	99	134			-0.40	34	94			-3.13	0.1	53
+2.20	99	133			-0.47	32	93		4	-3.20	0.1	52
+2.13	98	132			-0.53	30	92			-3.27	0.1	51
+2.07	98	131