This report presents the results from a 2014 review of 13 states that provided recidivism research on their websites regarding youth who had been placed on probation. Sections cover: system structure limits research capabilities; reports describe a variety of populations; measures of re-offending impact recidivism rates; individual characteristics add context to analysis; and different tracking periods result in various recidivism rates. The table "Reported Measures of Subsequent Offending in Juveniles Adjudicated to Probation" shows data according to state, juvenile probation population, marker event)s) (i.e., re-arrest, referral, re-adjudication and/or conviction, return to supervision, and commitment and/or incarceration), and tracking details (i.e., maximum follow-up in months, and source of data source). "Careful attention to how youth fare during and after supervision will help policymakers, agency administrators, and probation chiefs make informed decisions that improve practices related to youth on probation" (p. 4).