WeVideo
What makes WeVideo different than other web editing video tools is that students can collaborate. By registering with their Google accounts, students can share their videos and work with another student. The drawbacks include the free accounts are limited to five minutes, reduced amount of storage, and you are limited to where you can publish your videos. Using iMovie is preferable for the creativity and freedom allows your students, so students can always collaborate on a portion of their video, publish the video to Google Drive then put it in iMovie to make a complete, professionally edited video.