Note taking web app design specifically for students
There are many existing web apps designed for taking notes and saving things but few designed specifically for students and fewer done well. An app specifically for students could help them store notes for different classes as well as help organize how the notes are taken on the page (simple hierarchy, collapsable sections fast formatting). It could also take full advantage of being a web app by linking between note entries, collecting highlighted sections and linking out to further sources. Other possible features include using the student's own notes to help them study or allowing teacher access to provide note-taking outlines or study guides.