Rugby's a great way to keep fit and have fun with your mates, but more than that, kids learn commitment, to be reliable and accountable to others, and become part of a community.
"Teenagers tell us what they love about playing rugby is the time they get to spend with their mates, away from teachers and parents and being independent and just being themselves. Those friendships cemented on the rugby field are often lifelong - speaking from personal experience."
Anderson said 42,072 teenagers signed up for rugby in 2015 and having more teenagers was a particular focus for New Zealand Rugby.
"This year we're challenging high schools to sign up one more team. Often schools don't have quite enough players to make up an extra team so they share them around existing teams, giving everyone less game time. With a bit of extra effort we hope to encourage enough kids to make another team. The schools who achieve it will win a special rugby prize pack and go in the draw to win a visit from the All Blacks.
"Sonny Bill Williams is our ambassador for teenage rugby and he'll be visiting schools this year and we even have a TV show just for teenagers - Random Rugby TV," Anderson said.