Educational services, namely, providing an online platform and mobile apps for teaching and learning on the K-12 level that run non-downloadable online courses of instruction for students and that run non-downloadable software for performing calendar and grade recording functions; non-downloadable software for performing two-way interaction between teacher and student that enables teachers to assign activities and assessments to students; non-downloadable software for performing filtered searches of publisher-created resources, for curating resources and creating custom playlists for lesson preparation, classroom delivery, and student assignments, for accessing video-based professional development courses for teachers, and for adding user-created resources. The online platform and mobile apps provide the user with access to downloadable educational materials, namely, electronic textbooks, slide-deck presentations, video content, assignments, templates for activities, and student assessments