In this paper, we examine the reach and efficiency of the NIOS system and the idea of accessibility through two primary questions - i) who accesses the NIOS to pursue their secondary and higher secondary education and ii) Does the flexibility offered, in terms of the five year duration allowed to complete the courses, result in higher probability of course completion? These have been examined by using raw learners’ data from NIOS for the period 2008-2013; this is the first such analysis of this data to our knowledge. // The paper is structured as follows: (a) brief introduction to the features of NIOS; (b) defining efficiency in the educational system context, especially NIOS; (c) description of methods used and its limitations; (d) discussion of results; and (e) finally conclude with discussion on whether the system is working efficiently. // Paper ID 200