Teenage pregnancies in Guernsey fell by more than a third in 2009, compared to the year before.
There were 22 babies born to teenage mothers in the island during 2009, while there were 37 births in 2008.
The number of teenage abortions also decreased from 33 in 2008 to 22 last year.
Julie Duquemin, who teaches sexual relations and health in schools, said she believed education was a big factor in bringing the figures down.
She said: "I don't think you can stop young people from having sex if they choose to, however, you can teach them the consequences.
"You can teach them where to go for sexual health and advice and you can teach them the benefits of delaying that first sexual encounter so that they might prevent doing something that they regret later on."
It was a four year low for both figures, which peaked in 2008.