The division was temporarily/initially established in 1953 as a part of the Golden Ball Tournament for schools whose male enrolment under 225 students. In the initial year, it was held in conjunction with the A draw at Ryerson in Toronto. It was known as Division A from 67-68 thru 71-72. The champion is presented with L.G. Balfour Trophy. AA classification in low density areas is restricted to schools having a student population under 600 or all-boys schools having an enrolment under 300. At one point, it was classified as schools in a population centre under 60,000, with an enrolment under 699.

YEAR CHAMPION COACH FINAL RUNNER-UP
52-53 Belleville Albert  John Hayman 53-36 Pembroke HS
53-61 Not held ———————- —– —————
61-62 Brantford St. John’s Brother Harvey Roach  50-26 Whitby Henry Street
62-63 Brantford St. John’s Brother Harvey Roach    42-25 Athens District
63-64       Athens District
64-65 Parkhill North Middlesex Fred Holden 48-44 Elora
65-66 Fenwick Pelham District   Bob Peart49-20Mitchell District
66-67 Fenwick Pelham District J. Holl 47-37 Harrow District
67-68 Sudbury Sacre Coeur Brother Roland Saumur 57-42 St. Catherines Merritton
68-69 Fenwick Pelham District Bob Peart 67-43 Tecumseh St. Anne’s
69-70 Sarnia St. Patrick’s Barry Howson 60-50 Bowmanville
70-71 Guelph Bishop MacDonell John Lovelock 70-39 Ernestown
71-72 Hamilton Sir Allan MacNabb R. Bellingham 58-43 Windsor William Hands SS
72-73 Belleville Quinte J.S. Murray 64-55 Grimsby SS
73-74 Dundas Parkside Robert Foot 42-39 Chatham CI
74-75 Chatham John McGregor Larry Lahey 69-49 Woodstock College Avenue
75-76 Welland HVS Ron Lemon 57-51 Strathroy
76-77 Chatham-Kent SS Ron Coristine 70-51 Georgetown District
77-78 Fonthill E.L. Crossley Fred Stock73-59Belleville Moira
78-79 Niagara-on-the-Lake Niagara DSS Don McDougall 54-38 Orangeville
79-80 Chatham CI Greg Haddock 57-54 Milton
80-81 Belle River St. Anne Mike Eremic 58-54 Owen Sound West Hill
81-82 Blenheim District Kevin Farquharson 55-38 Essex
82-83 Etobicoke Alderwood CI Hank Spencer    
83-84 Timmins HVS Hugh Meyer 66-61 Sarnia Northern
84-85 Timmins HVS Hugh Meyer 49-47 Barrie Eastview
85-86 Timmins HVS Hugh Meyer 57-48 Sarnia Northern
86-87 Dundas Parkside Paul Baker 67-65 North York Bathurst Heights
87-88 Chatham John McGregor Larry Lahey 40-32 Sarnia St. Patrick’s
88-89 Chatham CI Greg Haddock 72-49 Timmins HVS
89-90 Chatham John McGregor Larry Lahey 67-45 Windsor John L. Forster
90-91 Chatham-Kent SS Greg Haddock 70-60 Belleville Nicholson Catholic
91-92 Chatham-Kent SS Dan Lewis 41-34 Timmins HVS
92-93 Barrie North CI Sandy Hosie/Doug Lowther 49-31 Windsor St. Joseph’s
93-94 LaSalle Sandwich Tim Sanders 45-34 Timmins HVS
94-95 Timmins HVS Hugh Meyer 71-60 Gloucester Louis-Riel
95-96 Barrie Innisdale Kelman-Harrington 75-59 Windsor John L. Forster
96-97 Chatham John McGregor Larry Lahey 49-38 Burlington Lord Elgin
97-98 Timmins HVS Hugh Meyer 54-41 Etobicoke Marian Academy
98-99 Peterborough Dave Goulding 69-50 Strathroy District
99-00 Chatham John McGregor Dan Lewis   Barrie North
00-01 Chatham John McGregor Dan Lewis 93-63 Kincardine
01-02 Scarborough Blessed Mother Teresa Jay McNeilly 58-49 Paris District
02-03 Scarborough Blessed Mother Teresa Jay McNeilly   Gloucester Louis Riel
03-04 Ernestown Tom Turnbull 52-42 Toronto Vaughan Road
04-05 Belleville Nicholson Jim Barbeau 43-42 Toronto Central Commerce
05-06 Belleville Nicholson Jim Barbeau 57-38 St. Catharines St. Francis
06-07 Belleville Nicholson Jim Barbeau 47-39 St. Catharines St. Francis
07-08 Kanata A.Y. Jackson Steve Ashfield 37-30 St. Catharines St. Francis
08-09 Oakville St. Thomas Aquinas Mark Maga 55-53 London Westminster
09-10 Dundas Parkside Dan Meyer 63-51 Windsor W.F. Herman
10-11 Smith Falls District Todd Spencer 41-38 Sarnia St. Christopher
11-12 Toronto Vaughan Road Wilton Hall 73-58 Hamilton Mere-Teresa
12-13 Scarborough Blessed Mother Teresa Kirt McNeilly 54-51 Hamilton Mere-Teresa
13-14 Mississauga Ascension of our Lord Haroslav Stepanenko 64-53 Aurora St. Andrews
14-15 St. Catharines St. Francis Patrick Sullivan 59-50 Toronto Crescent
15-16 Guelph Bishop Macdonell Trevor Smith 66-58 Rockcliffe Ashbury
16-17 Rockcliffe Ashbury Ian MacKinnon 76-52 Markham Thornlea
17-18 London Mother Theresa Chris Brown 54-52 St. Catharines St. Francis
18-19 Windsor W.C. Kennedy Patrick Osborne 64-59 Toronto Westview Centennial
19-20  Kingston Frontenac Duncan Cowan 47-41  Toronto Crescent 
20-21  CANCELLED (covid-19 pandemic)  —–   ———————— 
21-22 CANCELLED   (covid-19 pandemic)    —–   ————————  
22-23  St. Catharines St. Francis   Rich Anderson  69-59  Toronto St. Joan of Arc  
23-24Barrie St. Joseph’sDrew Taylor58-46Rockcliffe Ashbury
24-25Hamilton Sir Allan MacNabWilly Brown 76-58Scarborough St. Mother Theresa