In the 1960s, Tony Blacksheild was a lecturer, and later a senior lecturer, in the Department of Jurisprudence and International Law at the University of Sydney, where he worked with Julius Stone (and Upendra Baxi). In the 1970s he was one of the original founding faculty members at the newly-established Law School at the University of New South Wales, where he became an Associate Professor. In the 1980s he was Professor of Legal Studies in the interdisiplinary School of Social Sciences at La Trobe University, in Melbourne. In the 1990s he was Professor of Law at Macquarie University, Sydney. He retired in 1999. He is the co-author (together with George Williams) of the leading casebook on Australian constitutional law: Australian Constitutional Law & Theory: Commentary and Materials (4th edition 2006). In 1966 he was a Ford Foundation Fellow at the Indian Law Institute, where he was recognised as an honorary professor. His article on amendment of the Fundamental Rights, published in (1966) 8 Journal of the Indian Law Institute 139, was used in argument in Golak Nath v State of Punjab, AIR 1967 SC 1643.