He attended a private school in the locality in which he was born until attaining his eleventh year, when he entered Jefferson College, at Convent, Louisiana, graduating from that institution with the class of 1904.
During this time, as opportunity afforded, he also was reading law in the office of Marks & Wortham, at Napoleonville.
[2][3] Shortly following his graduation he formed a professional partnership at Napoleonville and there began the practice of law under the firm name of Marks & LeBlanc.
He was appointed by Governor Sanders as a member of the state board of public instruction, to fill an unexpired term.
[3] From 1920 to 1929, LeBlanc was a judge of Louisiana's 23rd Judicial District Court, for Assumption, Ascension, and St. James parishes.