Previous research by the Bureau has shown that the cost-effectiveness of the Drug Court could be increased through the early identification of those Drug Court participants at risk of non-compliance with program requirements. There are two reasons for this. Firstly, early identification would permit appropriate adjustments to be made to treatment in order to reduce the risk of program failure. Secondly, those who are at serious risk of non-compliance with the program could be removed from the program early on to reduce the cost they impose on the program. This bulletin describes an investigation designed to identify early indicators of future program compliance.