1079 players
6v6
11 players
11
6v6
In the youth association that I played in it is fine as long as the metal isn't sharp, but different associations have different rules.
The American Youth Soccer Organization is the largest single-entity youth soccer association in the United States of America. It has over 600000 registered players.
In professional soccer, you have 11 players on the field, including the keeper. In youth soccer, the number of players on the field varies depending on the age group.
7 per team
It's football not soccer, and the kids are either supporters of the club or part of the clubs youth program.
"Football cleats give you more support in the midsole than soccer or baseball cleats," says Joseph Skiba, equipment manager for the New York Giants. "This helps with lateral movement and with things like taking hits or making tackles." With a sturdier feel than a soccer cleat, football cleats keep your feet and ankles from turning. This allows for quick movements and helps keep your feet under you when tackling, blocking or taking hits. So it's probably fine to wear football cleats for baseball or soccer, but you shouldn't wear baseball or soccer cleats for football.
Of course! There are organizations like AYSO ( American Youth Soccer Organization), HYSA ( Hawaii Youth Soccer Association), and Futsal (has the same rules as soccer but is played on a smaller field and has only five players on the field at a time).