Hello Aspirant,

If you have missed the NIOS Class 12 exam for April 2025 (Block 1, Stream 1) you will not need to change your block or stream in order to sit the equivalent October 2025 exam. You are allowed to attempt the exam in the same stream and block as NIOS allows the learner to appear in a future exam cycle if they have missed another. All you need to do is fill out the exam form for October 2025 and pay the fees within the timeline for that exam cycle.