In a study of 14- to 18-year-olds in 40 schools, those completing the exercises three times a week saw 59% fewer concussions than other schools.
The exercises focus on increasing neck muscle strength, balance and movement.
The RFU is rolling out the programme in schools in England from next season.
The Rugby Football Union says it will provide seminars for rugby coaches on the exercises, as well online resources and training pitch handouts.
Head and neck injuries are more common in rugby than other sports because of the impact of tackling and scrummaging.