The Australian Schools Championships (formerly known as the National School Basketball Tournament) first began in Sydney in 1983. In the tournament's first year, Templestowe High School won both the Men's and Women's Championship Divisions.
Thirty-five years on, in 2018, a record number of teams nominated for the championship and nearly 1,800 young athletes represented 170 school teams from seven States and Territories at the Championship. The championship games were held across three venues; State Basketball Centre in Wantirna South, Dandenong Basketball Stadium in Dandenong North and Knox Basketball Stadium in Boronia, in partnership with Basketball Australia and Knox Basketball Association. The athletes competed across 19 divisions (U/15, U/17, U/20 and Championship, Men and Women), with the winners crowned as the best school basketball team in their division in the country.
The tournament now runs in the first week of December each year with three age groups; Senior (20 & Under), Junior (17 & under) and Freshman (15 & Under). The top senior team from each state competes in the Championship Division for the ultimate title.
Previous Championship Division Winners
| Year | Location | Male Champion | Female Champion |
| 1983 | Sydney | Templestowe HS | Templestowe HS |
| 1984 | Brisbane | Condell Park HS | Templestowe HS |
| 1985 | Melbourne | Melbourne HS | Templestowe HS |
| 1986 | Adelaide | St Peter's HS | Nazareth College |
| 1987 | Canberra | Marcellin College | Nazareth College |
| 1988 | Wollongong | Keira HS | Lake Ginninderra College |
| 1989 | Brisbane | Keira HS | Lake Ginninderra College |
| 1990 | Melbourne | Fig Tree HS | Lake Ginninderra College |
| 1991 | Perth | Wirreanda HS | Bendigo Collee |
| 1992 | Adelaide | Marist College | Daramalan College |
| 1993 | Canberra | Willetton SHS | Daramalan College |
| 1994 | Penrith | Willetton SHS | Willetton SHS |
| 1995 | Devonport | Parade College | Willetton SHS |
| 1996 | Canberra | St Patrick's Marist College | Murray High School |
| 1997 | Canberra | Lake Ginninderra College | Willetton SHS |
| 1998 | Canberra | Townsville SHS | Nazareth College |
| 1999 | Canberra | Wamers Bay | Townsville GS |
| 2000 | Canberra | Lake Ginninderra College | Mercedes College |
| 2001 | Ballarat | Lake Ginninderra College | Westfield Sports HS |
| 2002 | Ballarat | John Paul College | John Paul College |
| 2003 | Ballarat | John Paul College | John Paul College |
| 2004 | Albury | Oakhill College | Terrigal HS |
| 2005 | Albury | John Paul College | Caulfield Grammar |
| 2006 | Geelong | Townsville SHS | Caulfield Grammar |
| 2007 | Geelong | Lake Ginninderra College | John Paul College |
| 2008 | Newcastle | Caulfield Grammar | Xavier High School |
| 2009 | Newcastle | Caulfield Grammar | Box Hill Senior Secondary College |
| 2010 | Bendigo | Sydney Boys High School | John Paul College |
| 2011 | Bendigo | Sydney Boys High School | John Paul College |
| 2012 | Kilsyth/Knox | Caulfield Grammar | John Paul College |
| 2013 | Kilsyth/Knox | Lake Ginninderra College | Rowville Secondary College |
| 2014 | Canberra | St Augustine's College | Rowville Secondary College |
| 2015 | Canberra | Lake Ginninderra College | John Paul College |
| 2016 | Melbourne | Marcellin College | Box Hill Senior Secondary College |
| 2017 | Melbourne | Box Hill Senior Secondary College | St Margaret Mary's |
| 2018 | Melbourne | Trinity College | Rowville Secondary College |
| 2019 | Melbourne | Lake Ginninderra College | Box Hill Senior Secondary College |
