The KJV SLC is perfect as the primary resource for an adult Sunday school class and personal study or as a supplemental resource for any curriculum that follows the ISSL/Uniform Series Nearly two dozen ministers, teachers, and Christian education specialists provide the Bible commentary, lesson plans, discussion questions, and other features that make the Standard Lesson Commentary the most popular annual Bible commentary available. The Standard Lesson Commentary is based on the popular Uniform Series, also called the International Sunday School Lessons. This series, developed by scholars from several church fellowships, provides an orderly study of the Bible in a 6-year period.