For schools using School-Wide Positive Behavior Supports, the school counselor is an essential member of the implementation team. Moreover, the prevention model corresponds with the school counselor standards and the ASCA National Model. This article shows how a school counselor teams with school staff in a K-3 elementary school of 600 pupils to implement and manage a School-Wide Positive Behavior Support targeted intervention called Check-in/Check-out (CICO). The authors review current research relevant to CICO and provide sample student data, daily behavior report cards, referral forms, and home reports. The article gives suggestions on using CICO to support students with mental health concerns including using data to collaborate with other community professionals.