"Little League Age" is determined by the age of a player as of a specific date and is set by Little League International.  The first step a parent needs to take to register for the season is to determine your child's Little League Age here: Age Calculator.  There is a Spring and a Fall softball season each year. 

Rookies League Age 7 - 8:
Up to 12 games per season with 1-2 practices per week and up to 2 games per week.  This is an inter-league division. Primary practice location and home games will be at the  Expo Idaho Fairgrounds.

Minor League Age 8 - 10:
There are 12 games per season with 1-2 practices per week and 2 games per week.  This is an inter-league division. Primary practice location and home games will be at the Expo Idaho Fairgrounds.

Major League Age 10 - 12:
There are 12 games per season with 1-2 practices per week and 2 games per week.  This is an inter-league division. Primary practice location and home games will be at the Expo Idaho Fairgrounds.
                                                    
Seniors League Age 13 - 16:
There are 12+ games per season with 1-2 practices per week and up to 3 games per week. This is an inter-league division. Primary practice location and home games will be at Hillside Park: 4150 36th Street Boise, ID 83703 (the park next to Hillside Junior High).

For more information about divisions, field size, rules and regulations, please visit Little League International https://www.littleleague.org/