The OC pathway is associated with opportunity class placement during primary school, while the Selective High School pathway relates to placement in selective secondary schools. Eligibility, test structure, dates and procedures can change, so parents should always verify current requirements through NSW Department of Education information.

From a preparation perspective, both pathways can require students to work with unfamiliar problems rather than simply reproduce classroom knowledge.

Students may encounter challenging reading, mathematical reasoning, thinking or problem-solving tasks, depending on the relevant assessment.

The key difference for parents is therefore not simply “easy versus hard”. The assessments operate at different stages of a child's academic development.

Preparation should reflect that developmental difference.

For younger students preparing for OC testing, the emphasis should be on building strong foundations while gradually introducing reasoning and unfamiliar question formats.

For selective high school preparation, students generally need greater independence, stronger comprehension, more sophisticated mathematical reasoning and the ability to manage complex questions under time constraints.

Rather than comparing the two tests purely by difficulty, parents should ask:

What skills does my child need to demonstrate at this stage?

That question leads to much more effective preparation than simply increasing the number of practice papers.