The purpose of this study was to test the utility of draft guidelines in informing judicial decisions about bail. A sample of judges, based upon a stratified quota sampling design, was selected from the Philadephia Municipal Court to rule on sample cases. Eight judges were randomly selected to use guidelines and be "experimental judges," and eight others were randomly selected to be nonguideline or "control judges." Data for the sample cases were taken from defendants' files. Variables provided in this collection include number of suspects involved, number of different offenses charged, most serious injury experienced by the victim(s), preliminary arraignment disposition, amount of bail, socioeconomic status and demographics of the defendant, prior criminal history of the defendant, and reason for granting or denying bail.