Does he have a reading pen or similar technology?
Does he have other SEN or is the reading issue an anomaly amongst normal performance in other areas?
What type of school does he attend? At Y2 reading level well into secondary, is he in special or mainstream or a dedicated support group within mainstream? (My pupil who read at a similar level in upper KS2 will attend a unit run by the local special school within mainstream, for example)
What support does he get to access the curriculum, which in a mainstream school (if he is in one) will be reading-heavy?
What level of SEN support is he on, and what are the provisions in it?
Which external advisors have been involved (advisory teachers, Ed Psych, dyslexia assessors, optometrists)?
What have they recommended, and has what they recommended been implemented in full by the school?