Mr Walker said the cover, which was installed by Shade Systems Ltd, gave a place for the kids to practise in all kinds of weather.
The school previously had no one area where they could all meet together and this would allow them space to have full school assemblies, he said.
"We wanted to go for something of excellence that would benefit the school. The kids have all been looking and talking about it and they all seem quite excited, it's a huge facility."
Mr Walker said it would be used every day during school hours for physical education and every night by different school teams, not just netball, and by some of Rotorua's netball teams.
"It's going to be great. It means the students can train and be dry. No doubt we will have fights as to who booked it," he said.