The top junior team, captained by Dekoda Roberts, reached the final after an unbeaten run in pool play - including a thumping 61-4 win over Hauraki and a 73-15 win over Western Heights.
Sue Pene, the coach for both the junior and senior Rotorua Girls sides, said she was delighted with the outcome for her young side.
"I'm very pleased - this is a very young team for their category and they really impressed throughout the tournament," she said.
"In the final we moved the ball very quickly up the court and created lots of opportunities and in defence we put a lot of pressure on the ball and were very solid."
Pene said Dekoda, Jahzell Roberts, Aimee Whata and Jada Beckham were standouts for her team.
In total an estimated 500 players took to the courts with 26 teams involved across the senior boys' and senior girls' competition, while another 26 teams contested across the girls' and boys' junior categories.
The tournament acted as a warmup before the schools' weekly league starts, followed by national qualifiers in September.
Pene, who also co-organised the event, said she was impressed with the standard of basketball on display.
"The competition tipped over very nicely and it's great for all the teams to have a look at each other before the weekly league starts," she said. "So many teams wanted to be involved this year that we have a waiting list. Locally I think there is a lot of opportunities for us to do well this season - basketball is very strong in the area."
Tip-off secondary schools preseason tournament finals:
Senior girls' prem: Western Heights High School
Senior boys' prem: Hamilton Boys 62 St Patrick's Wellington 34
Senior boys' division 1: Napier Boys 31 Kelston Boys 28
Senior boys' division 2: Paeroa College 44 Kristin School 43
Junior girls' prem: Rotorua Girls 57 Paeroa College 19
Junior boys' prem: Napier Boys 50 Westlake Boys 30
Junior boys' division 1: Napier Boys 45 St John's A 38
Junior boys' division 2: John Paul College 52 Paeroa College 32
