Kenneth W. Merrell, PhD, the creator of the Strong Kids Series, was a beloved teacher, mentor, and advisor to the authors of the series and many students throughout his career. His legacy continues as we enthusiastically introduce the 2nd edition—his work and vision were continually on our minds as we worked through the revisions to ensure that the content not only captured the well-being of youth, but to also ensure that the curricula infused current research and the needs of a diverse system. The changes from the 1st edition to the 2nd edition of Strong Kids not only reflect updates to research and practice, which were applied to develop a better product, but also a spirit of paying it forward. Today, we find inspiration in his timeless ideas, his extraordinary gift for illuminating thoughts on a page, and his fortitude while facing little and enormous challenges alike. We also remember that he drew inspiration and joy from family, nature, music, and humor, which unquestionably nurtured his courageous and innovative spirit, and serves as a guidepost for our lives today. As fortunate recipients of this generosity, we acknowledge we are beneficiaries of many gifts. Perhaps one of the most important is the opportunity to share Ken’s work again and to continue his legacy. Strong Kids, 2nd Edition, is dedicated to Ken Merrell, with our utmost respect, humility, and gratitude.