Adaptive grading is divided by the standards obtained from the scale, just like IQ grading. Only when the above two indexes are lower than the normal value and do not reach the lower limit can this intelligence level be diagnosed. People with this level of intelligence have certain self-care ability and social communication ability, but it is difficult to adapt to complex situations and need help. They have a certain learning ability and can finish primary school or even enter junior high school. Under the fierce competition for further education, it is very difficult to further education. Can engage in semi-technical or relatively simple technical work.