Depending on whether you are looking for physical stationery or educational materials for the "OC" test, there are several options available.
If you are referring to the placement test for students in New South Wales (NSW), there are resources for practice exam papers . The O.C.
: While not a blank paper notebook, this paperback book available at Barnes & Noble provides a detailed written history of the series. Opportunity Class (OC) Practice Papers Depending on whether you are looking for physical
: While the modern test is computer-based, students are typically allowed to use paper for working out calculations. The O.C.