15 or 21 depends on the game you are playing
There are two scoring systems in volleyball: rally score and traditional score. Rally score is when a point is given to a team each time the play ends. For example, if the opposing team misses a serve or a hit, the point would go to our team. In traditional scoring, the serving team may only receive a point if they score. If they don't score, no point is administered the opposing team has the same opportunity when they serve. Rally scoring is a faster pace of scoring, while traditional score is more focused on earning points.
Regardless the score, the set can only be won if one of the teams scores two points more than the other in a set. There are no restrictions regarding the maximum lenght or the highest score. So, theoretically, the result can be even up to 100:102 etc.
In school volleyball is a fall sport, so in September it starts. It ends around the end of October. Then club season starts in December and usually ends in June.
They are the end points.
A high school volleyball season normally ends in either October or November.
The only time that others points are added to your score is when a player shoots the moon. In this case a single player takes all of the hearts and the queen of spades (thus getting all of the point available). That player ends up getting no points while the other players all get 26.
It is people who stand on opposite ends on the court in volleyball. They call whether the ball is in or out of the court deciding who gets the point.
A tie game.
Generally, it begins in September and goes to November for woman's volleyball. For men's it normally starts in March and ends around June.