While I prefer to guide teachers in the direction of teaching their elementary school students not to reveal personally identifying information on classroom blogs, I also recognize that sometimes the only way a teacher will try blogging is if they can restrict access to just students and their parents. The directions below cover the same steps you can take to restrict access to Blogger and WordPress blog posts. Edublogs and Kidblog run on the WordPress software so the directions for restricting access to posts on those services are the same as for WordPress.com and self-hosted WordPress blogs.
Restricting Access to Blogger Posts
If you cannot see the video, the screenshots below offer the same directions.
Restricting Access to WordPress Posts (and Kidblog and Edublogs)
(Click the images to view them full size).
Step 1: Create a post or a page in your blog editor. Before pressing publish click the "edit" link next to the visibility setting just above the "publish" button for your post or page.
Step 2: Select "private" or "password protected."
Follow the two steps pictured below to edit the visibility setting on existing pages or posts.