This paper reports on a project to develop and implement an interdisciplinary, thematic high school curriculum combining instruction in Spanish language and four arts disciplines. Additional targeted skills included: accessing and using new information effectively; thinking critically about art; development of global responsibility and cross-cultural understanding; use of creativity; development of interpersonal skills, self-understanding, and ethical conduct; and establishment of personal wellness practices. The report describes the origins of the project, participating teachers and students, methods of evaluating project success, and study conclusions. It was found that the project had a positive effect on student achievement in language and art and persistence in Spanish language learning. Factors in the interdisciplinary classroom environment that facilitated achievement are also analyzed. Contains 19 references. (MSE)