For hosting common files it's ok. Also it is on Android too do, great to transfer files between your Windows and your phone. But if you want better security you have to subscribe a monthly offer.
GoPad for Schools - School Management
Dropbox - Online Sync and File Sharing
Tuio - Tuio is a billing and payment application that allow daycare centers and pre-schools to centralize and manage all parent billing and payment in one place.
Google Drive - Access and sync your files anywhere
Yusp - Yusp is a next generation, real-time personalization engine having all product modules as defined by Gartner for various business models.
Mega - Secure File Storage and collaboration