The school has a system of mail aliases controlled with the mlalias command. There is also a web interface which allows you to examine the mail aliases and a list of useful School mlaliases . Please remember though, think carefully about which list you send your mail to.
People tend to get very annoyed about receiving mail on list which is inappropriate.
In addition to those you will get from mlalias -l there are mail aliases created from the udb. There are similar lists for other subjects.