As the United States becomes more culturally diverse, the inclusion of musics from various cultural traditions in music education programs has become increasingly significant in recent decades. As music teachers have come to rely on Internet resources to teach world musics, a need has arisen to monitor the quality of world music websites. To address such needs, we designed a World Music Educational Website Checklist and checked its validity and reliability. The checklist was structured based on the 4Cs design model (Barnes & Yu, 2002), which consists of (a) Content (information), (b) Control (navigation), (c) Consistency (readability), and (d) Corroboration (accountability). Thirty-one Korean music educators and twenty-seven Chinese music educators evaluated either Korean or Chinese websites using the checklist based on their cultural origin as culture-bearer music educators are the most qualified to evaluate their respective country's music education websites. Internal consistency reliability of the checklist subscales for the Korean and Chinese websites ranged from acceptable to excellent ([alpha] = 0.82 to [alpha] = 0.96; [alpha] = 0.70 to [alpha] = 0.99). The results also showed good inter-rater reliability ([alpha] = 0.99 and [alpha] = 0.98, respectively).