Grade 12 Vectors and Calculus should cover the following topics:

- algebra and geometry of vectors, applications of vectors, intersection of lines and planes.

- concept of calculus

- derivatives and derivative applications

- sketching graphs

This is a question best asked to the teachers in your school. The topics covered in these courses vary from school to school. I imagine the teachers at your school would be very excited that you are looking ahead, and would love to give you an overview of the topics.

For a general overview of vectors and calculus, check out the following links:

http://en.wikipedia.org/wiki/Calculus

http://en.wikipedia.org/wiki/Vector_(mathematics_and_physics)