We did approximately 3 months of this system while my son was falling behind at the beginning of P3. I felt by three months the principles of phonics had essentially clicked and he was decoding almost everything within reason for his language ability. I met his literacy support teacher today and he has gained 16 months in reading age since October 2018 and is now only 1 month behind his actual age. His teacher is hopeful he will be above average by the end of the school year.
– L