
“The Cub Scout Cycle” (#13027A) is a helpful chart from BSA that shows the recommended beginning and ending points of each level of the Cub Scout program.
Tigers (first graders), Wolfs (second graders), and Bears (third graders) each begin their respective program years on June 1st.
First-year Webelos Scouts (fourth graders) also begin on June 1st. They become second-year Webelos Scouts (fifth graders) the following June.
Second-year Webelos Scouts should graduate from the Cub Scout pack in February and begin meeting with their new Boy Scout troop in March.
The Cycle chart can be downloaded via the link below.