Grand Master O'Toole began his Taekwon-Do training in 1968. In his long career he has won everything there is to win in Irish Taekwon-Do, and competed successfully at world level.

However, Grand Master O'Toole's career has not been limited to massive success on the world stage. He is also one of the Ireland's most highly respected instructors. He has forged this reputation through his vast knowledge of Taekwon-Do, as well as his patience and clarity while instructing. Grand Master O'Toole is a co-founder of the INTA and, along with Mr. Martin, he has guided hundreds of students to black belt level, and beyond.

1971	Received grading award for best performance.
1972	Received grading award for best performance.
1975	British Open Tae Kwon-Do Championships: Sparring 1st, Power 1st, Patterns 3rd, Grand Champion Cork V Dublin: Black Belt Sparring 1st Dublin Black Belt Sparring 1st Wexford Black Belt Sparring 1st Received I Degree Black Belt
1977	1st Black Belt Open Championships: 1st Sparring, 1st Power, Grand Champion Received II Degree Black Belt
1978	National Champion. Represented Ireland in 2nd World Tae Kwon-Do Championships in Oklahoma City, USA.
1979	National Champion
1980	National Champion. European Championships, Crystal Palace. Captain Dublin Team. Received III Degree Black Belt
1981	Captain of Irish Team in 3rd World Tae Kwon Do Championships in Argentina - winning Gold in Team Patterns, Silver in Team Power, and Bronze in Team Sparring. Gold in Individual Power. The Irish Team were overall winners - World Champions 1981.
1982	European Championships, Italy, Irish Team Captain. Gold Medal Patterns and Bronze Medal Sparring. Individual Gold Medal Patterns and Bronze Medal Special Technique. Member of European Selection Team which defeated the North Koreans.
1983	Los Angles Open, USA. Lightweight Sparing 1st. Recieved IV Degree Black Belt
1984	G.I.K.O. World Martial Arts Spectacular, Lemmington, England. Irish Team Captain - defeating World Champion Tommy Williams.
1985	Ireland V England Irish Team Captain. Irish Team Open Winners Captain. Kempo Ireland International Team Captain/Coach - Winners. North of Ireland Kung-Fu Open Team Captain/Coach - Winners.
1986	Cork V Dublin Team Challenge Captain/Coach - Winners.
1987	Received V Degree Black Belt. Received Diploma in Exercise and Fitness Instruction in UCD. Martial Arts Spectacular Dublin. Team Event - Captain/Coach - Winners.
1988	Dublin Open Tae Kwon Do Championships. 1st Sparring. 1st Patterns. 1st Power. Dublin Millennium International Team Event Captain - Winners. World Open Tae Kwon-Do Championships Leicester, England - Bronze medal Sparring. Arklow Garden of Ireland Team Tournament Captain/Coach - Winners.
1990	Captained TKD Centre Team which won All-Style Martial Arts Team Spectacular in Dublin. Launch of the Irish National Tae Kwon Do Association (I.N.T.A).
1991	Captain of I.N.T.A. Team which won two Bronze medals and Overall Best Technique Award at the European Open Championships in Germany.
1992	Received International Taekwon-Do Instructor Certificate from I.T.F. Attended International Seminar given by Grandmaster Choi Hong Hi.
1995	Received VI Degree Black Belt under Grandmaster Choi Hong Hi. Received International Umpire Class 'A' Certificate. Attended International Seminar given by Grandmaster Choi Hong Hi.
1999	Attended International Seminar given by Grandmaster Choi Hong Hi.
2001 2009	Received VII Degree Black Belt. Received VIII Degree at IIC Benidorm, Spain
2017	Received IX Degree at ITF World Championships, Dublin