(Examples of dueling in the movies)
Duelling was a practise in wizarding culture in which two or more wizards or witches engaged in combat under the condition that only magical means could be used. The combatants faced each other and bowed. After bowing the two would then attempt to disarm, stun, injure, defeat, or kill each other in order to force submission, and thus a winner was decided.
Duelling also exists as a sport in the same way that fencing is a sport in the Muggle world. Outside of actual combat it can be turned into a friendly sporting competition.
The term “Warlock” originally referred to a Wizard who was trained in duelling and martial magic, as well as to those who had performed feats of bravery.
A spectacular duel in the Ministry Atrium
A full-on wizard’s duel is something incredible to behold. The duel between Dumbledore and Grindelwald in 1945 is legendary, and the duel between Dumbledore and Voldemort in the Ministry Atrium at the climax of the Battle of the Department of Mysteries was equally spectacular.
Many duels involve non-verbal spells for speed, but saying the incantations aloud seems to be preferred if there is time (e.g. Voldemort used verbal spells in his duels with Harry). The Shield Charm is one of the most common duelling spells. Other spells typically used in dueling include Stunning Spells, the Impediment Jinx, the Full Body-Bind Curse, and the Dancing Feet Spell. Harry’s use of the Disarming Spell in dueling may be considered somewhat unusual, but this spell is actually one of the key spells to any duelist’s arsenal.
Aspen wands are favored by those who aspire to be top duelers. In fact, a secretive 18th century dueling club called itself the Silver Spears because they exclusively used aspen wands. Other good wands for duelling include red oak and rowan. Yew wands are feared in duels for their association with curses and evil magic.
Winners of Duelling competitions include: Alberta Toothill: Winner of the All-England Wizarding Duelling Competition of 1430. Famously overcame the favorite, Samson Wiblin, with a Blasting Charm. Elizabeth Smudgling, who won the title of Supreme Dueler in a famous Dartmoor contest in 1379 using a spell of her own invention, the Disarming Charm.
There are rules and customs that define how a proper duel is performed and that are normally known to wizards and witches born to magical families, even at a young age. For instance, Ron Weasley told Harry Potter some of the rules of dueling as a first year student at Hogwarts School of Witchcraft and Wizardry after Harry was challenged to a duel by Draco Malfoy in 1991. In the 1992–1993 school year Gilderoy Lockhart formed the dueling club, in which dueling strips were used in a system similar to that of modern fencing.
In a formal duel, one wizard or witch challenges another, although it is implied that duels are not commonplace in modern polite society. If the other person accepts, they then arrange a meeting time and place for the duel. Draco challenged Harry this way in their first year, though it was rally an attempt to get Harry into trouble for being out of his dormitories after curfew. Opponents bow to one another before beginning to fight, as Lord Voldemort reminded Harry Potter before their duel in the graveyard of Little Hangleton in 1995. Lockhart has gone as far as twirling his hands while bowing, possibly trying to make himself look more gentlemanly. However, duelists who do not respect their opponents do not usually bow correctly, as Snape simply jerked his head, while Harry, Draco Malfoy, and Voldemort barely bent their heads at all.
Duelists will often have a "second" in a formal duel — a person, usually a trusted ally, who will act as a replacement for one duelist if necessary. Ron Weasley volunteered to be Harry's second in the aforementioned planned duel with Draco, who chose Vincent Crabbe.
There is a standard rule in duels that only magical means may be used to fight an opponent, and that there is to be no physical contact between the duelists. Millicent Bulstrode broke this rule when she dueled Hermione Granger in 1992 in the Duelling Club; the much larger girl ended up wrestling Hermione to the ground and holding her in a headlock.
The parties of a duel might also agree to other limits, unless planning to duel to the death, which is only common practise in a war. For example, Minerva McGonagall informed fellow professor Horace Slughorn just before the Battle of Hogwarts that if any Slytherin attempted to sabotage their defence efforts or to fight them, they would "duel to kill", which alarmed him. This may indicate that duelists generally agree not to use particularly dangerous and/or illegal spells, such as the Unforgivable Curses.
Duels can also be used for training purposes, as was the case in Hogwarts School of Witchcraft and Wizardry in 1992, when Defense Against the Dark Arts professor Gilderoy Lockhart founded the short-lived Dueling Club. Its function was to teach students self-defense while "Slytherin's Monster" was on the loose. The club did not last long, as Professor Lockhart was incompetent.
(And there is your overview of dueling by wiki)
Dueling from pottermore and other sites is terms of of the tournaments and the life of a duelist is pretty popular, they are like celebrities or athletes of the wizarding world alongside quidditch stars, they have the under 13 tournaments then the U16 then the 18+ then the pros
What I will be teaching and for those who I will have I assistance is what I have learned by way of reading from the sources, stances, spells, lore, and maybe an event where we find out who wins and out of the club and maybe top three gets invited to the U13 tournament somehow someway.
THE FUTURE LORD SLYTHERIN!
Haters gonna Hate, that is all I should say..People are just naturally jealous of Greatness. - Marcus