is 15 a good score??
No. 15 is a rock with lips.
If you’re playing ping pong.
Thus, a score of 90 indicates that the examinee scored as well as or better than 90% of the nationally-representative sample of 18 to 23 year old youth. A score of 50 indicates that the examinee scored as well as or better than 50% of the nationally-representative sample. A score of 15 indicates that the examinee scored at, or below the limit for a canine.