Interested and willing candidate, who want to purse class 10th or 12th course from National Open School they need to apply in online mode only. The authority conducts the public exam twice in a year i.e. in the month of April/May and October/November. Many students are confused regarding the procedure need to be followed by them to get admission into the Secondary 10th and Senior Secondary 12th Courses in National Institute of Open Schooling NIOS. Minimum Educational Qualification Secondary Course: Candidates, having minimum class 8th certificate, can apply for the secondary course. Senior Secondary Course: In order to get admitted into the senior secondary course, candidates need to pass at least class 10th or its equivalent exam from a recognized board or institution. Age Criteria There are no upper age criteria for getting admission however, the minimum age limit is 14 years for the secondary course and 15 years for the senior secondary course. If you are one of them then twe will provide you with all possible information associated with NIOS admission.