School health services (SHSs) and school nurses play a crucial role in identifying and supporting students with mental illness. The integration of information and communication technology (ICT) can facilitate interorganizational collaboration in this context. Due to the limited research in this area, a scoping review was conducted to explore SHSs' use of ICT in interorganization collaboration regarding students with mental illness. Six articles were reviewed, revealing three key themes: "types of ICT employed by SHSs in interorganizational collaboration," "constellation of SHSs in interorganizational collaboration," and "opportunities and challenges for SHSs using ICT in interorganizational collaboration." Notably, two of the six articles highlighted the absence of school nurses in interorganizational collaboration. Even though ICT plays a crucial role in interorganizational collaboration, no comprehensive solution was found. This scoping review confirms that there are challenges with operability and regulations that govern the exchange of private information between organizations.