The problem in this research is the unavailability of teaching materials for Cultural Arts (music, dance, and drama) based on local content in North Sumatra. The purpose of this study was to develop and determine the validation, practicality and effectiveness of teaching materials for Art and Culture based on local content in North Sumatra. The type of research used is Research and Development (R&D) with a Four-D model, namely: Define, Design, Develop and Disseminate. The cultural arts teaching materials developed include traditional arts from North Sumatra, including: traditional music (Karo, Simalungun, Nias), traditional dances (Mandailing, Sibolga, Dairi), traditional theater (Makyong and Batak Opera). The results of the assessment of the material expert validators are an average of 96.5% (very valid). The test results to students averaged 85.07 (practical). The results of the assessment of the effectiveness of the Arts and Culture teaching materials were an average of 67.08 (effective), the second stage trial averaged 91.25 (Very Effective)..