How I Use It
My students have been using iMovie for 7 years (we are a 1:1 school district) and can now create iMovies as easy as writing a report. I like to give my students a choice of creating an iMovie, a Keynote or a written paper - they always choose Keynote or iMovie. Sometimes I have them specifically create an iMovie for a project (such as an artist research video) and they can create a 2 minute iMovie with only a day or two given to the whole process. One of my favorite ways to use iMovie is in the creation of a video portfolio - students take pictures of each assignment (in process and final) and then add them to iMovie with a verbal reflection over the top of their images. They then add to this throughout the semester with each project added. So at the end, they have a 30 minute (give or take) movie with images from each project assigned and reflections on each project.
iMovie takes some 'teaching' to the students if they have not used it before. It does have quite a steep learning curve. However, once students pick it up, they can easily and quickly create amazing professional level videos. Students get very 'into' this app and will quickly out pace the teacher in how much they know. It is easy then to make students the teachers of this app and help each other learn the little 'tricks' they discover and to help each other take their videos to the next level. Students as young as 4th grade can pick up the basics of iMovie with some coaching from the teacher.