Both the American Heritage Girls (AHG) and the Boy Scouts of America (BSA) have an advancement program. They are structured differently.
The AHG advancement is based on age, where the BSA program is based on rank attained through time and skills.
Both organizations have a badge program where the scouts can work through requirements to earn badges in different skill sets. The BSA uses a system of Merit badges and the AHG uses a program, where girls can step out of their comfort zone and try new experiences in a safe environment.The six Badge Frontiers include: Heritage, Family Living, Arts, Outdoor Skills, Personal Well-Being, and Science & Technology. These Frontiers provides girls the opportunity to learn a wide array of life skills, inspiring them to become lifelong learners and doers.
The BSA Merit Badge system allows all scouts to learn about sports, crafts, science, trades, business, and future careers as scouts earn merit badges. There are more than 135 merit badges, and any Scout, or any qualified Venturer or Sea Scout may earn any of these at any time.
BSA Source: https://www.scouting.org/skills/merit-badges/