The profile narrative should say which norms were used, as indicated by the student's grade level.

These are samples of the three possible individual reports:

http://itp.education.uiowa.edu/ia/documents/IA_Interpreting_Reports.pdf

There is quite a bit of info at UIowa's ITBS website, some of it specific to the state of Iowa:

http://itp.education.uiowa.edu/ia/

...pronounced like the long vowel and first letter of the alphabet...