I think using websites in your classroom is an amazing idea for teachers to implement in their classroom.  It keeps teachers up to date with technology, it allows students to have access to assignments, homework, contact information at anytime.  It also is an excellent way for communication through students and the teacher, and even parents and the teacher.

  At different grade levels different items can be included on the website.  In the younger grades it can have very few links, but included could be daily or weekly homework assignments, a calendar of the schools events that month, a copy of that months classroom  newsletter, and maybe links to interactive games that they can play and practice at home.

  In high school grades you can include all of the above and add other things to it.  Include online resources for assignments, and places for students to blog.  

  A website can be a life savor when it comes to many things.  If students forget their homework assignments, they can look online.  Parents can write you emails with comments and concerns.  

  Overall it's something that takes a little work to keep up to date, but would go a long way in your classroom.