SAN FRANCISCO--(BUSINESS WIRE)--ClassDojo, creator of the classroom tool that helps over 3 million teachers give positive encouragement to more than 35 million students, today launched a comprehensive update to its flagship mobile app to let teachers and parents build stronger relationships with each other. With this update, ClassDojo doubles down on its focus to make the education experience transparent and one in which teachers, students and parents are all involved in helping students develo