It is the information I sent out to parents in early April. It is still useful for parents towards the end of May (each year).
We are now at the beginning of year 4. Soon, students will have to be able to do difficult year 5 work at Mathemafix to have a chance for the OC test in 2022. This means the foundation must be solid before doing OC trials. Unfortunately, a lot of the kids don't have a solid foundation and this means they will have to work on the foundation right close to the OC test date and cram on the hard stuff. This is not useful for long term performance and only helps a little in the OC test. And it is unlikely to be able to get into any OC classes in Sydney. This is why it's important to have a long term view and build the foundation mainly for the selective school test in 2024.