IRL and SCL are for U13 and older teams.
SCL is for teams that qualify for Premiere or D1 and D2 Divisions. They play games in all the regions depending on where the other teams in their bracket are from. With half of the games at your home field and the other half at your opponent's home field. Teams can be from Utah County up to Cache county.
IRL is for teams below D2. We are in the North Region which includes Davis, Weber, Morgan, Box Elder and Cache County.