This study evaluated the effects of a Tier II positive behavior interventions and supports (PBIS) intervention, Check-in/Check-out (CICO), on the off-task behavior of 4 students with behavioral challenges and special needs in a residential facility. In addition, the study examined the effects of additional mentor contact (i.e., mid-day check-up; Check-in/Check-up/Check-out; CICUCO) on the off-task behavior of a student who was nonresponsive to CICO. CICO produced decreases in the occurrences of off-task behavior in both CICO and CICUCO conditions with both noted as highly acceptable by school CICO mentors. Limitations and future directions are discussed. (Contains 2 tables and 1 figure.)