Wechsler intelligence scale for children is divided into 13 age groups:

1.5-2 years old

2.5-3 years old

3-3.5 years old

3.5-4 years old

4-4.5 years old

4.5-5 years old < According to the test results, children's IQ can be divided into the following grades:

1. Extremely low IQ: 7 and below

2. Low IQ: 71-8

3. Medium IQ: 81-9

4. Upper-middle IQ: 91-11

5. High IQ: 111. At the same time, the test results may be influenced by different factors, so parents and educators should comprehensively evaluate their children's growth and development with different aspects of observation.