The Learning School Alliance is a network of schools collaborating about professional practice. The network embodies Learning Forward's purpose to advance effective job-embedded professional learning that leads to student outcomes. A key component of Learning Forward's Standards for Professional Learning is a focus on collaborative learning, typically in learning communities. These learning communities are committed to collective responsibility, goal alignment, and ongoing job-embedded professional learning. However, collaborative learning must be job-embedded and connected to teaching and learning. Traditionally, most professional development has taken place outside the school day or only during the summer, but many schools and districts are finding time inside the workweek for groups to use for data analysis, lesson study, and investigation of new instructional practices. Many schools also use technology resources such as wikis and e-learning platforms to communicate things that in the past might have been addressed in a faculty meeting. With online communities of practice and other synchronous and asynchronous tools, there are many ways in which schools can plan effectively so that time (or lack of time) won't be a factor in how well professional learning communities function. In this article, principals of schools that are part of the Learning School Alliance describe how they embed time for collaborative learning into their school days.