The school began in temporary premises on the North-East corner of George and Elizabeth Streets, but soon after commenced building on the site immediately behind St John's Church.

In 1848 the visitor, the first Anglican Bishop of Tasmania, Francis Russell Nixon, came to the school and a soiree was held in his honour.

It was founded by Edward Alleyne Nathan, who had been a teacher at Launceston Church Grammar School.

[6] In 1896, Launceston Church Grammar School celebrated its 50th year under the headmasters the Revd Christopher Wilkinson and Mr Harry Gillett with a jubilee service at St John's and a grand ceremony in the Albert Hall.

The school community suffered deeply during the war years as students served their country, many making the ultimate sacrifice.

This was an emotional occasion for many Old Boys as they relived their youth, and the bishop gave an inspiring address to the congregation of a thousand, telling them they must develop international fellowship.

The Senior Campus is located in the suburb of Mowbray Heights, Launceston and caters for students in Grades 7 – 12.

The Junior Campus is located at the old Broadland House site on the corner of Lyttleton Street and Elphin Road, East Launceston.

In 1959, an additional day house was formed and named in honour of former headmaster, Mr Norman Roff.

The large number of boarders at the Senior School in 1961 made it necessary to introduce another house for purposes of administration.

[8] Combined: Boys: Girls: One of the Launceston Church Grammar School's aims is to provide a globally relevant education.

All students who have attended Launceston Grammar automatically become members of the Old Launcestonians' Association (OLA), the organisation which represents former scholars of the school.