You can create another page (or two or three) in Blogger. The additional pages are basic web pages (they aren't blogs).
The extra pages could be about you, contain your classroom policies, or links to important resources.
By default, they do have the same sidebar gadgets on your main blog page. It looks like there's a way to hide the sidebars on your static pages, but it requires some HTML wizardry. Proceed at your own risk!