http://meritbadge.org/wiki/index.php/Scout_badge
The first phase of advancement (from joining to First Class) is designed to teach the Scoutcraft skills, how to participate in a group, and to learn self-reliance. The Scout badge is awarded when the Scout demonstrates a rudimentary knowledge of the Scouting ideals and program. Tenderfoot, Second Class, and First Class have progressively harder requirements in the areas of Scoutcraft, physical fitness, citizenship, personal growth, and Scout Spirit.
The first phase of advancement (from joining to First Class) is designed to teach the Scoutcraft skills, how to participate in a group, and to learn self-reliance. The Scout badge is awarded when the Scout demonstrates a rudimentary knowledge of the Scouting ideals and program. Tenderfoot, Second Class, and First Class have progressively harder requirements in the areas of Scoutcraft, physical fitness, citizenship, personal growth, and Scout Spirit.
The first phase of advancement (from joining to First Class) is designed to teach the Scoutcraft skills, how to participate in a group, and to learn self-reliance. The Scout badge is awarded when the Scout demonstrates a rudimentary knowledge of the Scouting ideals and program. Tenderfoot, Second Class, and First Class have progressively harder requirements in the areas of Scoutcraft, physical fitness, citizenship, personal growth, and Scout Spirit.
The second phase of Star, Life, and Eagle is designed to develop leadership skills and allow the Scout to explore potential vocations and avocations through the merit badge program. The Star and Life ranks require that the Scout serve in a position of responsibility and perform community service. All ranks (as well as Eagle Palms) require that the Scout participate in a Scoutmaster conference and pass a Board of Review.
The second phase of Star, Life, and Eagle is designed to develop leadership skills and allow the Scout to explore potential vocations and avocations through the merit badge program. The Star and Life ranks require that the Scout serve in a position of responsibility and perform community service. All ranks (as well as Eagle Palms) require that the Scout participate in a Scoutmaster conference and pass a Board of Review.
The Eagle Scout Rank is the highest rank attainable in the Boy Scout program of the Boy Scouts of America. Since its introduction in 1911, the Eagle Scout Rank has been earned by more than 2 million young men. The title of "Eagle Scout" is held for life, thus giving rise to the phrase "Once an Eagle, always an Eagle".
Requirements include earning a number of merit badges and demonstrating Scout spirit, service, and leadership. This includes an extensive service project that the Scout plans, organizes, leads, and manages. Eagle Scouts are presented with a medal and a badge that visibly recognizes the accomplishments of the Scout. Additional recognition can be earned through Eagle Palms, awarded for completing additional tenure, leadership, and merit badge requirements.
The Eagle Scout rank requires that you earn 21 of the 121 Merit Badges. After earning the Eagle Scout rank, you can continue to earn Merit badges and Eagle Palms until your 18th birthday. Currently the maximum number of Eagle Palms you can earn is 20, worn as six silver palms and one gold palm. You would need at least 3 months for each palm for a total of 60 months, or five years after earning Eagle. To earn all 20 palms you would need to earn Eagle by your 13th birthday.