Objective: The "T"eaching, "R"aising, "A"nd "C"ommunicating with "K"ids (TRACK) program was a longitudinal pilot-trial intervention designed to assist mothers living with HIV (MLHs) to disclose their serostatus to their young children (age 6-12 years). Method: MLH and child dyads (N = 80 dyads) were recruited and randomized to intervention or control; the intervention group had 3 individual sessions and 1 follow-up phone call. The sessions focused on preparing MLHs for disclosure through behavioral exercises using Derlega's model (V. J. Derlega, B. A. Winstead, K. Greene, J. Serovich, & W. N. Elwood, 2004) of HIV disclosure. Both MLHs and their child were assessed across multiple time points (baseline, 3, 6, and 9 months) regarding disclosure of HIV status, and specific outcome variables (i.e., relationship context, mother's health, child's mental health, and family outcomes). Results: MLHs in the intervention group were 6 times more likely to disclose their HIV status than those in the control group (OR = 6.33, 95% CI [1.64, 24.45]), with 33% disclosing in the intervention group compared with 7.3% in the control group. MLHs in the intervention group showed increases in disclosure self-efficacy across time, increased communication with their child, and improvement in emotional functioning. Children of MLHs in the intervention group exhibited reductions in depression and anxiety, and increases in happiness. Conclusions: TRACK was found to be successful in helping MLHs disclose their HIV status to their children, with positive outcomes noted for both MLHs and their children. (Contains 4 figures and 2 tables.)