The length of stay for detainees held at the St. Louis County Jail for probation violations has decreased substantially since the implementation of a new program at the jail, researchers at the University of Missouri–St. Louis say.  A new report commissioned by the MacArthur Foundation found average lengths of stay for offenders who violated their probation decreased from 65 days to 28 days after the county’s Expedited Probation Program was implemented in 2017 to decrease the amount of probation violators in jail.