In Tampa Florida, Christains have completely changed the atmosphere of a middle school because of prayer.  800 incidents among 600 students where 54 of those incidents needed police involvement.  With permission from the school board and the administrator, the church put a prayer person in each classroom for 1/2 hour on Mondays before anyone arrived (students or teachers).  Within 1 year, the number of incidents involving police dropped from 54 to 2!  The church is now mentoring students and every month, intercessors drive 2-3 hours to pray in Tampa for the Central Florida region.