Gifted Issues Discussion homepage Forums Identification, Testing & Assessment Need Help converting WJIII standard scores to %

I'm hoping someone can help me convert to the following standard scores on the Woodcock Johnson Test of achievement III into age/grade based percents. This is for my 2e kiddo.

basic reading:116
brief math: 108
brief writing: 110
Academic skills: 111
Phoneme/knowledge 118


6 years 0 months.

Thanks!!

(I can't get stuff to line up!)
first column is scaled score
second column is Difference from Mean (100)
third column is Difference / SD (15) = Z-score
fourth column is percentile (based on age)
116 16 1.07 85.69
108 8 0.53 70.31
110 10 0.67 74.75
111 11 0.73 76.83
118 18 1.20 88.49

That's just math; you'd need someone with a scoring manual to come up with grade-equivalents or grade-based percentiles.

Thank you!!! That helped put things into perspective on my 2E kid.