The Dyslexia Foundation warns compulsory NCEA reading and writing tests will be a "train-smash" for dyslexic students.
It says the tests being introduced in 2024 will bar students with dyslexia from earning an NCEA certificate.
The Education Ministry says students with dyslexia will get reader/writer assistants to help them sit the high-stakes online literacy and numeracy tests.
Dyslexia Foundation trustee Guy Pope-Mayell spoke to Charlotte Cook.