Test date age calculation

To obtain the student’s chronological age on the date of testing, enter the date of testing
and the student’s date of birth in the appropriate spaces, as illustrated in Figure 2.4. If the
student was tested during two sessions, use only the first testing date in the calculation.
Subtract the birth date from the test date. For these calculations, all months are assumed
to have 30 days. Ages are not rounded up to the next month or year. p.21-22 Examiner’s Manual