Once your photos have been posted on Classmates® you can't change their size or rotate them. If a photo you've posted needs to be adjusted, please edit the original photo as needed using the photo editing tools on your device. Then remove the original and replace it with the new version.
Photos in an album appear in the order they're uploaded, with the most recently added photo first. If you want to change the order of photos or the cover photo, you'll need to delete older photos and add them again in the order you'd like. It's easiest to choose the order you want photos to appear in before uploading them to an album.