Very great discussion happening on more adoption of LibreOffice in educational and otherwise places.
Yes, the title is stranegly worded, but I did want to share a productive thread happening on the Accessibility email list for LibreOffice.
You can read the thread at https://listarchives.libreoffice.org/global/accessibility/msg01038.html
it is and has great compatibility with office formats, such as password protected excel spreadsheets.