The role of the Judicial review in the case of Edgbert v. Boule was, to determine whether each side was constitutional or not. This is also part of the checks and balances that the three branches of the federal government use in order to limit each other's power and ensure a balance of power.
Generally speaking, after being an apprentice, a person would become a "journeyman," since this required a higher set of skills and expertise. This was not always the case, however.