Thankfully, many apps have some equivalent of a "save" button that allows you to send your project to the Photos app, where you can transport it from there.  In some apps, that button even doubles as a "send" button, where you can email, post to Facebook (though I don't recommend that option for school), or a whole host of other sharing options.  Let's look at examples from a few apps.

Pic Collage is an app that allows you to mix together your own text and pictures with pictures and even YouTube videos on a canvas that you can customize.  As such, it is one of the more powerful free tools out there for showcasing student work, digital and non-digital.  Let's take a look at a sample project:

So, I'm ready to upload this from my iPad to somewhere else (and there are many options for sending files, more on that later).  Where's the magic save button?  If you look in the bottom-right corner of the screen, you'll see a box with an arrow coming out of it.  This is one of the more common icons for saving/sharing/exporting that you'll see on the iPad, so any time you see this symbol, it means that you have the ability of taking your work in that app and sending it somewhere else!

So, let's press that magic button.  Here's what happens when you do:

PicCollage saves your project as a picture file and sends it right to you "Photos" app.  From there, you can see, there are a number of other options that you can utilize.  Let's press the "More" button, because the most useful options, in my opinion, live there.

Many companies have designed their apps so that you can use their services to move your projects around, including Google Drive (not pictured).  The Google Drive option is especially awesome, because of how easily you can access the service on your laptop.  And, with Apple's AirDrop service, you can even send your file directly to another iPad or your laptop!

Let's see another example with the Pixntell app (not currently on the iPads).  This paid app gives you the ability to narrate photo slideshows, a good tool to help students begin building their digital portfolios.  Here, the share button is near the top-right corner of the screen, with an arrow pointing to the right instead of up, another common share/save/export icon.

When you press it, it automatically saves your project as a movie file in the "Photos" app, and gives you additional options for sending and sharing.

Every app will be different, with different options for saving and sharing, and different icons.  However, if you can get into the habit of identifying common save buttons and where they are in the various apps that you use, it will make accessing your content wherever you need it much easier in the long run!