I want 2 study mech engg @ NIIT, NERIST etc.in NE region for a good study oppurtunity & best in clas job placement.wat do u suggest?

I m in clas 12 at present studying science.and i am doing good in my studies.i secured 84% in HSLC, 89% in class 11 & hope to do pretty well in HS FINAL & ENGG ENTRANCE EXAMS too.