Three Tools for Quickly & Easily Creating End-of-Year Slideshow Videos

In my weekly newsletter I mentioned that a sure sign that the end of the school year is near always lands in my inbox as an uptick in the number of questions I get about saving and moving files. Another sign that the end of the school year is near is an increase in questions like this one that just landed in my inbox,  I have taken a lot of pictures this year. I would like to put them into a slideshow with music for my students for the last day of school. What program do you recommend? ...