NRF follows IQA rules.
Here is a summery of how quidditch is played for those that are starting out, or do not want to read the rulebook yet.
Every team has 3 chasers, 1 keeper, 2 beaters and 1 seeker. All running on brooms. The chasers score goals by throwing the quaffle through one of the opposing teams’ hoops. The keeper tries to stop the other team in scoring. Each goal is worth ten points.
There are 3 bludgers on the pitch. If a player is hit by an opposing team’s bludger, you are “knocked out” and must dismount from your broom and return to your hoops, touch them and remount before they can rejoin play. This is called the knock-out procedure, and also happens if you dismount of any other reason – losing your broom, falling of it or other.
The bludgers are used to knock out opposing players to either regain the quaffle or clear a path for the chasers to score goals. A beater may catch a bludger, to negate the knock-out. If the bludger hits the ground before an opposing player, the effect is also negated.
A player may tackle another player of the same position which is carrying a ball (chasers and keepers are here considered same position – as they play with the same ball). Tackles have to be engaged from the front, with one arm and below the neck and above the knees. This is used to take down opposing players to win the ball, stop them advancing or otherwise gain an advantage.
The snitch is carried by a neutral person (snitch runner) in a sock velcroed to their shorts. This ball is what the seekers wants to catch. The catch is worth 30 points. The snitch runner is allowed to use almost any trick, feint or force to avoid being caught, while the seeker is restriced on contact rules. This makes it a very hard position to play, but quick, smart and agile seekers find themselves able to catch eventually.
When the snitch is caught, the game normally ends. There is no draw in quidditch, so if the snitch catch makes the score even, the game goes into overtime – an additional 5 minutes of play, or til the snitch is caught again. If the score is still even, the game goes to sudden death.