Yeah! you can give the 12th examination in two modes. One you can apply for 12th examination as an External/Private student. The second way is you have to apply for the Open schools like NIOS and you can pass the examination. Now Open schools are easier compared to the state boards or the national boards. So if you are doing any jobs then I would recommend you to go for the Open schooling. Now its your wish what you will do.

To know more about the NIOSvisit the link below:

https://school.careers360.com/articles/nios-admission

I hope this answer helps. All the very best for your future endeavors!