The showdown was fiercer than the boys' final, with the girls pushing it to a five-setter which was not decided until the final game.
Johnson was the eventual winner after fighting back when Brookland held two separate match points.
On the same day as the Northland Secondary Schools tournament was the Mangakahia Junior Tournament, which boasted 37 entries with players coming from Maungaturoto, Manaia, Whangarei, Kamo, Dargaville, Kerikeri and Mid Western.
The secondary schools competition had players from Whangarei Boys', Whangarei Girls', Kerikeri High, and Otamatea High Schools, with Tauraroa Area School also competing.
Results:
Boys Secondary School Individual
Winner: Max Trimble; 2nd Finn Trimble; 3rd Milton Brookland.
Girls Secondary School Individual
Winner: MacKenzie Johnson; 2nd Olivia Brookland; 3rd Gemma Turketo.
Mangakahia Junior Tournament
Junior Boys Division 1
Winner: Aaron Randall; runner-up Keegan Robbins. Special Plate: Shayden Toka. Plate: Jacob Browne. Consolation Plate Liam Hawken.
Junior Boys Division 2
Winner: Ben van Veen; runner-up Ben West; Special Plate Cory Ferguson; Consolation Plate Kaleb Guest.
Junior Boys Division 3
Winner: Jakob Harvey; runner-up Max Woolhouse. Special Plate Hunter Smith. Consolation Plate Grant Powdrell.
Junior Girls Division 1
Winner: Gemma Turketo; runner-up Paige Brown. Special Plate:Annmarie Holst. Plate: Iyra Stewart. Consolation Plate: Samantha Allen.
Junior Girls Division 2
Winner: Jesse Allen; runner-up Anna Moselen; 3rd Jade Woolhouse.
Junior Girls Division 3
Winner: Sarah Maley; runner-up Jodi West; 3rd Evie McLean.