In 2013 and 2014, Mitchell played for the New South Wales under-16s and under-18s teams respectively.
Mitchell played for the Roosters' S. G. Ball Cup team during the 2014 season, where he was named as the SG Ball Player of the Year, and the man-of-the-match in the SG Ball Grand Final.

In November 2014, Mitchell was selected for the Australian Schoolboys team for their tour of England and France.
He was named as player of the series, having scored 13 tries in 7 games.

Mitchell played in the Roosters' NYC team during the 2015 season.
On 16 June 2015, he re-signed with the club until the end of the 2019 season.
On 8 July 2015, Mitchell played for the New South Wales under 20s team where he played at fullback and scored a try in the 32-16 win at Suncorp Stadium.
On 14 September 2015, Mitchell was named on the interchange bench in the 2015 NYC Team of the Year.
In 2013 and 2014, Mitchell played for the New South Wales under-16s and under-18s teams respectively. Mitchell played for the Roosters' S. G. Ball Cup team during the 2014 season, where he was named as the SG Ball Player of the Year, and the man-of-the-match in the SG Ball Grand Final. 
In November 2014, Mitchell was selected for the Australian Schoolboys team for their tour of England and France. He was named as player of the series, having scored 13 tries in 7 games.
Mitchell played in the Roosters' NYC team during the 2015 season. On 16 June 2015, he re-signed with the club until the end of the 2019 season. On 8 July 2015, Mitchell played for the New South Wales under 20s team where he played at fullback and scored a try in the 32-16 win at Suncorp Stadium. On 14 September 2015, Mitchell was named on the interchange bench in the 2015 NYC Team of the Year.
Latrell Mitchell