Rochelle, a teacher, attends professional development training to improve her skills but finds it difficult to implement what she learns without guidance. Research shows traditional "sit and get" professional development is ineffective, while models involving observation and coaching are more successful. A report called "The Mirage" concluded that billions are spent on professional development with no measurable impact on teaching quality. Effective professional development should be ongoing, provide support for implementation, involve active learning and modeling, and be discipline-specific.