The sessions are built specifically around the teenage years, so that's where they'll fit most directly. But if you're parenting younger kids, you'll still walk away with plenty of useful insights you can put to work right now, and a head start on what's coming.
And if you're still not sure whether your kids are too young or too old for this, our honest recommendation is to just give it a try. There's nothing to lose. You can ask for a full refund any time within 14 days of your purchase.