What Are the Key Benefits of Studying Through NIOS? NIOS stands for the National Institute of Open Schooling, an autonomous institution under the Ministry of Education, Government of India. It is the largest open schooling system in the world, established to provide flexible and quality education to learners who are unable to attend regular schools. Key Features of NIOS: Flexible Learning: Students can learn at their own pace through distance education and online resources. Wide Subject Choice: