Hi Aspirant,

You can go for state boards but since you are saying you only want to pursue. So, there is only to do so which is NIOS. NIOS is a recognized board that is autonomous under Ministry of Human Resource and Development (MHRD), Government of India. So, it's validity can't be questioned. It is accepted by many foreign universities for providing admission in their universities and students are equally eligible to study in Abroad as the students who have completed 12th standard from CBSE/ State Boards.

Hope this helps.

Good luck!!