Dear Satyabrata,

What course would you like to pursue in US and Canada after you 12th?

FOr admission to UG programs, you require appearing for either SAT or ACT. Also, you would be required to prove your English language proficiency.  Some of the exams are IELTS,  TOEFL.

Do revert with details and I will be able to suggest you better.

Best wishes,

Scope is awesome in both the countries regarding job and education quality