The Sabbath School department provides Sabbath School bible study guides and material for programming on Sabbath mornings and other activities during the rest of the week. The department also supplies training and resources to local teachers of religious education and other members, promotes personal and world missions, and designs programs and resources to equip and train members to minister and serve their communities.
For more info link: http://www.nadadventist.org/article/1073742502/ministries-services/ministries/sabbath-school.
The Adult Sabbath School Lessons are prepared by the Office of the Adult Sabbath School Guide of the General Conference of Seventh-day Adventists and are available online. http://www.sabbathschoolpersonalministries.org/