Learning in and through the arts helps develop the essential knowledge, skills and creative capacities all students need to succeed in school, work and life. As building-level leaders, school principals play a key role in ensuring every student has access to high-quality and equitable arts learning as part of a well-rounded education. This guide offers three concrete actions school principals can take to increase the arts in education in their schools: (1) establish a schoolwide commitment to arts learning; (2) create an arts-rich learning environment; and (3) examine the use of time and resources. Each action is supported by low-cost or no-cost strategies that school leaders have used and found effective -- whether it's beginning an arts or arts-integration program where none exists, strengthening an existing program or preserving an arts program against future cuts. While many of the strategies are drawn from elementary schools, they are likely to be applicable in a variety of grade levels. [For the 2011 version of this report, see ED541071.]