I am glad to see that there are others who are as cautious with allowing their progeny to ride on-road as I have been. Like I said previously, you'll only get one chance to make the right choice, and there aren't any "do-overs".
It is humorous to hear all of the folks who pipe up and tell of their experiences, of starting motorcycling on-road, and with no problems at all. That is just faulty logic IMO. There is no doubt that the odds that something will happen to your son while taking this fast track to the street are very small. But they are not zero. For every hundred or more anecdotal cases of successfully learning on a street bike, there is always at least one case of the other possibility. Here's one:
My wife's cousin's son was a great kid. Never a troublemaker. Always a hard worker. Nice Italian kid. Loved his Mom and Jesus too. You know the type. He went through trade school and was becoming an electrician. Worked as an apprentice and saved up a few dollars. Responsible. Had a cute girlfriend. He had the world by the proverbial balls.
With no other motorcycling experience he used some of his savings and bought a crotch rocket, and after taking the appropriate mandatory MSF classes he was good to go. Until some inattentive cage driver turned left in front of him and about 3 of his riding friends, while they were riding down a busy suburban street at completely legal speeds. After sailing over the car, his helmet didn't save him. The cute girlfriend got off with only broken arm when she landed on top of him, cushioning the blow. The other friends also only got banged up. We saw them all at the funeral.
As sad as it is to hear of a tragedy such as this one, the depth of grief that his parents endure is unfathomable to me. My wife's cousin has to live the rest of his life saying... "If I'd only made sure that he was safer." I know that I love my son too deeply to endure a loss like this, if I had the ability to make it safer for him.
Now I know that this could happen to any one of us any day. After all, this is the risk that we take to enjoy the exhilarating experience of motorcycling. But the facts are that drivers, even of cars, are more apt to be involved in accidents during their first few years. And motorcyclists are far, far more apt to be killed or seriously injured when they get into any accident. Especially in this age of increased driver inattentiveness and distractions, we all need every edge.
Anything that can be done to make that transition to riding on the road safer seems like a really good idea to this old father. 'Cause even if it's only a one in a hundred chance that something bad will happen, wouldn't you rather make that one in a thousand, or one in 10 thousand? I know I would. I did. Your decision may vary.
Fred has good points,I have not encouraged or discouraged m/c license. I came close to losing my daughter to a car wreck when she was 17(lack of judgement on her part turned in front of a bus) and when one of your children is lying there in icu for 3days and your not knowing which way it will go, I wish no one had to go thru that. So I say do everything you can to have him ready for the road before he goes on the road.Time in the dirt sounds like a great idea