* Google Drawing (found in your Drive under the New button)
* Google Slides - adjust the size of the slide to 8.5 x 11. Objects are easy to move around for layout. Here's a great resource about using Slides for this purpose that also includes some templates for infographics.
* Google's DataGifMaker - depending on what sort of data you're using
* Canva for Education (be sure to use the Education part of the site to get the features!) See more about Canva here.