If your school is using Microsoft SharePoint as a place for you to create sites for your classes, you can add homework drop boxes for students surprisingly easily. Here are the steps: 

1. Create a folder in your site
   1. You can make more folders within the folder to help identify various assignments
2. Grant your students the permission level of Contribute on the outside folder so they are allowed to upload documents to all the folders within it
   1. If you are not sure how to grant permissions your tech department can help you
   2. Your students should have Read permissions for the site, and Contribute permissions for the outside folder (and therefore all the folders within it)
3. Turn on versioning
   1. Click on Settings / Document Library Settings (in the ribbon of the folder)
   2. Under General Settings click Versioning Settings
   3. Under Content Approval click Yes
   4. Accept the other defaults

Using these settings, students can upload documents to the folders, and will only be able to see their own document. The only way they can view what someone else has uploaded is if you “Approve” the document. The idea is that you leave the documents as “Pending” so the students only see their own submissions.