After the 2019 event in Sherwood Park, Alberta, the U18 nationals were cancelled in 2020 and 2021 due to the COVID-19 pandemic.

[3] The event returned in 2022 in Oakville, Ontario with an expanded field of twenty-one teams in each division and kept this same format for the 2023 championship in Timmins.

The 2024 edition also used this twenty-one-team format, splitting the teams into three pools of seven.

Based on results from the 2022 and 2023 events, certain provinces earned two berths to the championship.

On the boy's side, Alberta, Manitoba, New Brunswick, Newfoundland and Labrador, Northern Ontario, Nova Scotia, Ontario and Saskatchewan earned a second spot and in the girl's event, Alberta, British Columbia, New Brunswick, Newfoundland and Labrador, Northern Ontario, Nova Scotia, Ontario and Quebec got a second team.