"The key is we train three teams together twice a week on our three courts and then we scrimmage against each other at the end ... We have a culture and we try to develop it.
"If you want a tall pyramid you've got to have a broad base and that has always been the philosophy all the way through."
Henderson's team defeated Mount Maunganui College in the Bay of Plenty girls' senior A final to claim yet another Bay title last weekend.
"They were third last year and we were second so it was always going to be a tough game," he said. "They have two very good outside hitters and we knew we were up against it. We played them in the prelims and beat them 3-1. We had played Tauranga Girls' and won that 3-1 then we had to play our B team in the semifinals, who we beat 3-0.
"Our girls had been waiting for this final game all weekend. They played really well, particularly in the first and third sets. Our error rate was really down and the girls were really quite focused."
Henderson was impressed with the overall standard shown by the top schools.
"This is what makes this area quite strong. We have ourselves Mount, Tauranga Girls' and our B team finished fourth, which was really pleasing."