how i do my 11 nd 12 in a one year nd in a low fees

Hi priyanka, There is no such provision by which you can pursue your 11th and 12th grade together and that too within one year duration. Although you can look for the private options like NIOS or look out for the pre university courses offered by the Open Universities. @rexmty: very well said Kin

if you talking about 11th and 12th its not possible to complete it in one year