Engrade is a free online platform that connects teachers, students, and parents. It allows teachers to post homework assignments and grades, track attendance, and securely message students. Students can view assignments, check grades and attendance, and message teachers. Engrade has been in use since 2003, has over 300,000 users, and provides key features like assignment calendars, gradebooks, progress reports, and attendance tracking to help teachers manage their classes and communicate with students and parents online.