Toby can be categorized under mild intellectual disability
Step-by-step explanation:
People with Mild Intellectual disability have a less IQ score. They have a very slow grasping and comprehending power in learning a new skill. They are the people who have the potential to achieve an academic success. The average IQ for a normal person is hundred but here Toby ha an IQ of 60 which shows that he is suffering out of mild mental difficulty.
They are the people who can read well but their comprehension is quite slow. Mild intellectual disability also hampers the adaptive skills and socializing skills.