Would dyslexia be considered a hook, or the opposite?

My S17 is dyslexic and dyscalculic. He wrote about these issues in his supplemental comments section but his primary essay was about his experiences with volunteering and scouting. He has taken 3 AP’s (Psych, APES and US Govt.) and dropped Euro and APUSH. In addition, he took Honors Chem and Bio. He reads well but slowly and his writing is slow, too.