This can be very helpful when deciding upon occupational and qualification pathways. They can be useful when faced with a child who has an apparent learning difficulty. Is the child bright in some tasks or delayed in all areas tested. Children with speech and language difficulties can be identified by the discrepancy between practical tasks and verbal tasks. This is very useful information for speech therapists.
Some people just like to know their IQ it can add to self esteem.
It can be a useful precaution. Knowledge of a child's IQ can be useful evidence if the child fails to thrive in an educational setting. As parents are aware of what should be achieved they can monitor to make sure that achievement levels are being achieved and investigate early if this is not the case.