It can be done beautifully in minutes or it can take much more time. Depends upon your needs.
I set up both a website and blog for my daughter's preschool. The blog in particular became a great asset to parents as the teachers took to journaling about classroom activities.
The website contained for the larger community and the blog was used within the internal community.
While they needed to own their domain, you may not be in that position and you might be inexpensively and easily satisfied with something like a google blog account, or wordpress has some great layouts that look very much like websites instead of blogs.
If you don't need to own a domain which costs money, not much but does cost, then consider Google or Wordpress blogs. I think I prefer Wordpress for the flexibility of designs.