According to the organization's website, Boy Scout ranks, in ascending order from lowest to highest, are Scout, Tenderfoot, Second Class, First Class, Star, Life and Eagle. A Scout rank is earned by joining a troop, reciting the Pledge of Allegiance, tying a square knot, agreeing to live by Scouting's principles and knowing the salute, motto and handshake. The requirements for Eagle include leading a project and earning several merit badges.
To earn the Tenderfoot rank, a Boy Scout must memorize the Scout Oath, the Scout Law, motto and slogan. Additionally, a Scout must tie knots, complete physical tests, cook a meal on a camp out and demonstrate how to live by Scouting's principles.
Merit badges aren't required for a rank until the Star rank. This is also the first rank that requires a time element in that the Scout must be a First Class rank for a least four months before advancing. For the Star rank, Scouts must complete at least 6 hours of service project work.
To earn the Eagle rank, Scouts must earn a minimum of 21 merit badges, 13 of which are specifically required. An Eagle Scout candidate must plan and implement a service project in which he leads a team of fellow Scouts on a project that helps a community organization, religious group or school. Scouts have until age 18 to earn the Eagle rank.