The Library at GCHSS provides a quiet area for reading and studying, at the same time offering a varied selection of resources for the use of the school community. Books are grouped as Reference and Melitensia, as well as a Lending area comprised of Information books and an abundant selection of Fiction. To further encourage the love of reading ongoing displays of books are organised.

The Library is open throughout the school day, between 08:00 and 15:00, and is totally accessible. It is found at Level 0 in the New Block.

The highlight of the scholastic year is Library Week which is held in January. Library Week revolves around a particular theme and apart from book displays, talks and other activities are held in collaboration with subject departments; films made from books we have in the Library are also shown. A fundraising Book Sale is also held throughout Library Week.

The GCHSS Library supports personal development at all ability levels within the school.