Just a thought, if you don't have email accounts, you could use a webpage with link options to personalize a students experience with the Hour of Code. Start with the survey and based on a students score or letter (share the score so they get feedback right away but not the spreadsheet which might side track some kids), tell them to go to the right link to match their level.
I've introduced coding to 5th graders and 2nd graders recently. Here's two solid tips. First, start with a quick game of Simon Says. Then follow it with Kodable iPad app and then Hopscotch, if time permits. The Simon Say's game helps you make coding real for the kids. Kids can make the connection easier to computers and code. You might even hear "Ahhhh" computers will do exactly what you tell them to do, just like Simon Says, step by step directions = code. Kids need to understand the basics, the foundation for all coding languages. That's where Kodable comes in and does an exceptionally fun job making the important points like sequence, conditions and loops, in a rather short period of time, too.