The Senior Contest is an invitational 4 hour test with 5 questions held after July that decides summer school selections and AMO invites. It is what year 11 and 12 students do instead of the AIMO though younger students also participate.
Our preparation generally consists of learning the curriculum Algebra, Geometry, Number theory and Combinatorics (in other courses) then condition ourselves for 4 hours using the exams. While this is very good for first timers a different approach is required for returning students because the questions have been seen and the challenge may also be diminished. We try to put this approach here too which involves doing scattered questions like an assignment and a 4 hour test of similar difficulty. The contest problems are discussed in this course.