Grover , a satyr , goes undercover at Yancy Academy as a disabled student in order to discover if there are any half-bloods who attend it because most half-bloods have AD-HD and dyslexia and can do special things . Grover , a satyr , goes undercover at a boarding school as a disabled student in order to discover if there are any half-bloods who attend it because most half-bloods have ADHD and dyslexia and can do special things .