I sponsored a few courses and saw a lot of kids that were 8 or 9 in the class, I don't remember any of them passing. Some of them pass at 10 or 12, but some of them can't read well enough to comprehend the testing. As long as the kid can do the course by themselves would be my basis of age limits. I don't think dad should "help" with the course testing part. Even if he goes thru the course and doesnt pass he will gain something. I waited on my grandsons till they were 14 to take the course, but they could hunt, just couldn't buy a license till they were 16.