Certificates are a means to increased professional growth and a higher income. They might be a standalone qualification or a complement to a college degree. Examples include a real estate license, a medical assistant certification, a Teacher License or an IT certification. Certificates allow workers to obtain job-specific skills and often open the door for high school graduates to obtain a two or four-year degree later in life. Industry leaders identify certificate earners as life-long learners with ambition and workplace efficiency, opening the door to promotions and raises. Collection of certificate data only began in 2015, so further breakdowns of this metric are currently unavailable.