Step-by-step, schools from the elementary through high school levels are making the transition to 21st-century learning. Some have crossed the threshold almost entirely. In today's progressive classrooms, yesterday's rows of quiet listeners have given way to small groups of active learners, thoroughly engaged in discussions and explorations. And where's the teacher? Instead of standing front and center to deliver instruction, he or she is apt to be on the move, observing, asking questions, and guiding students to make their own sense of the world. Even the classroom walls have expanded, with technologies connecting students to the wider global community. In many schools, the Internet has opened access to a vast world of information, and students are learning critical-thinking skills to filter out the noise and decide which sources are reliable, which information to trust. Kids now create and share their own content too. This means students need to master new technologies and also learn to navigate online communities safely and responsibly. This guide is intended to bring more parents into the conversation about improving education. Readers will get a glimpse of outstanding online resources and projects, sorted by grade levels, and a list of tips to help bring 21st-century skills home. The guide also lists organizations that offer more in-depth information about project-based learning, social and emotional learning, and other strategies to improve education.