CBSE OASIS portal stands for Online Affiliated School Information System an official digital portal launched by the Central Board of Secondary Education (CBSE) for affiliated schools across India. The OASIS portal allows school administrators to log in at saras.cbse.gov.in and update critical academic data including teacher details, student enrollments, skill education subjects, and school infrastructure. It is compulsory for all CBSE-affiliated schools to complete OASIS data submission annually to maintain their affiliation status and ensure students are registered for Board Exams 2025-26.