RSS is a technology that allows this to happen:
education.ie offers free rss/xml feeds for you to add to your reader or website. Simply select the information you wish to subscribe to from the list below, and from that page click the 'Subscribe to this feed' option.
You choose whichever is most convenient for you, depending where you want to receive your RSS feed.
Google Chrome users: Google Chrome does not have a built in RSS feed so won't display the RSS feed pages correctly. The workaround for this is to install a Chrome RSS extension and manually add the links to feeds you wish to subscribe to. Chrome RSS extensions are available from their store here: Google webstore