different RSS feeds to email

Hi, I am working on a school blog. I have different a different category set up for each classroom, plus one for the “blog” area. I have a different sidebar widget set for each classroom. They have requested that different RSS feeds go to email (i.e. a parent may go to the classroom 10 page and click on a rss feed for the classroom 10 category and then they receive an email for that classroom). Some parents who have kids in different classrooms would have more than one rss email feed, and everyone would subscribe via email to the category “blog”, which has just general school-wide info. Right now I have one page setup with the option to select the feeds they want, but it doesn’t go to email.

DOes someone know if there is a plugin that would accomplish this, or via some other manner? Here’s the url to the site: http://tinyurl.com/3cajx72