This study examines the psychometric properties of the Vanderbilt AD/H
D Diagnostic Teacher Rating Scale (VADTRS) and provides preliminary no
rmative data from a large, geographically defined population. The VADT
RS consists of the complete list of DSM-IV AD/HD symptoms, a screen fo
r other disruptive behavior disorders, anxiety and depression, and rat
ings of academic and classroom behavior performance. Teachers in one s
uburban county completed the scale for their students during 2 consecu
tive years. Statistical methods included (a) exploratory and confirmat
ory latent variable analyses of item data, (b) evaluation of the inter
nal consistency of the latent dimensions, (c) evaluation of latent str
ucture concordance between school year samples, and (d) preliminary ev
aluation of criterion-related validity. The instrument comprises four
behavioral dimensions and two performance dimensions. The behavioral d
imensions were concordant between school years and were consistent wit
h a priori DSM-TV diagnostic criteria. Correlations between latent dim
ensions and relevant, known disorders or problems varied from .25 to .
66.