It could mark one of the biggest changes for lawyers joining the profession since the first U.S. bar exam was given in Delaware in 1763 — a single bar exam aimed at standardizing attorney credentials nationwide.

Next year, at least 10 states are expected to switch to the so-called Uniform Bar Exam, and 22 other jurisdictions are positioned to adopt the test in the next few years. The test, developed by the National Conference of Bar Examiners, or NCBE, will allow law school graduates to transport their bar scores across state lines without re-taking exams. And backers say a uniform exam will improve the quality of bar exams, particularly in states with small test-development budgets.