– Today, educational institutions are required to change rapidly following the development of the digital era. The rapid development of the Internet encourages stakeholders who are used to using services online, wanting the same service in accessing academic information. This is well known by the owners and managers of educational institutions, but the provision of school academic information system services is often constrained because it requires a large investment in the development of systems and the procurement of data center infrastructure and maintenance. This study aims to develop academic information systems that are deployed on cloud computing with the Software as a Service (SaaS) service model. This service model allows schools to utilize the system without having to develop and maintain the system and invest in their own data center. Schools only need to register the system and customize user roles and rights, adjust school logos, display report, and components that exist on the subjects of each school as needed. This system was built using the waterfall model software development method which included needs analysis, design, implementation, and testing. The system that is designed to carry out assessment activities on students becomes easier, because the teachers can directly input the values and set the components of the values they have in each subject.Keywords – Cloud Computing, School Information System, Software as a Service.