This Blog Functionality is for communication between whole classroom students. In this blog anyone can post something and anyone can respond and comment on that post. This blog functionality is the same for both students and Faculty. In a blog Faculty is also a member like student. The blog page will be like below.
User can select any blog and he can see the posts in the blog.
Here users can post blogs by clicking on the post to blog button. Then he will have a page to post to blog.
User can see all posts and comments but he only can delete his posts and comments.