Your 10 year old son got an IQ score of 60 is that really bad?

No, IQ tests are generally aimed at people from their late teens up. If your son took a test that was aimed at his age level than that is bad if not he then he did better than 14% of adults in America who take an online IQ test

I heard somewhere that an IQ under 70 is Mentally challenged , but I'm not sure for what age group that is and I don't know the accuracy of that. === === == Have your son tested again! I know of a case where a teenager's IQ appeared to be only 70. He talked to me about the test and I gained the impression that he hadn't fully understood the instructions. His school re-tested him on another, similar test and his result was 99. If the IQ of 60 is accurate one would expect learning difficulties and also problems with development. Note that in addition to conventional IQ tests there are also individual tests administered face to face by a psychologist. In any case an IQ result of 60 calls for further investigation.