We were going to use the regular offline Scratch. However all of the monitors are 1080 and when the kids would run the game full screen you end up with this old school 4:3 aspect ratio. I wanted something 16:9 so yesterday I went out here, found the great tut on modding scratch, and converted the stage setup from 480x360 to 1280x720. Also added in some menu options to change the stage layout from small, med and full size (different from the full screen). I initially went all the way to 1920x1080 but then had some issues with some other things so backed it down.
Full screen mode is still doing some kind of upscaling but I don't have the time to try and sort it now as we have class monday.
Also went through and removed the icons for the library since it's empty anyway and I can't find any way to put in custom sprites into the library (found where to add and change categories but gave up after a couple hours as it looks like you need a JSON data files). Would be so much easier with some sort of directory pull but oh well.
Also dumped in some fonts that we will be using in the class so the menu buttons (sprites) options I had manually converted to sprites for them in photoshop from the fonts aren't needed. They can now use the cool fonts on their own from within Scratch.
I read through a lot of back and forth on increasing resolution on scratch and I couldn't understand why I couldn't find anyone who had done it since it was a pretty simple adjustment (lot's of file changes but nothing crazy).
You can take a look at the final swf file for it here
Just open it with flash player to check it out.
Let me know if you all know how to add in assets (sprites) to the library and what you think about the larger stage setup being 16:9
edited because I can't seem to get the link to actually be linkable.