I can only assume that if your son is on Concerta he has been diagnosed with both Dyslexia and ADHD? The Concerta will not assist his reading ability.
Dyslexia will make studying difficult and it is presumably for this reason that the school feels he will not cope. As such, finding a different studying tool, such as recording his notes so he can listen to them repeatedly rather than read them may help. If his dyslexia is affecting his writing to the extent that the teachers are unable to make out his spelling, he may benefit from having a scribe (someone who writes for him during tests and exams). Concessions can be obtained from the department of education for children with diagnosed difficulties.
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