Sir i had failed in 2014 from west bengal board h.s in physics and math n in 2015 start new sellybus examination nd i m old sellybus student

Sir i had failed my h.s exam on 2014 in physics n math from west bengal board n in 2015 examination start in new sellybus &new pettern and i m a old sellybus student so can i write my exam in old sellybus?or new sellybus n new pettern?n if i have pass only phesics in six subject so can i can i pass