Get a head start on the work-based training for an apprenticeship program while you're still in high school through Youth Work in Trades in conjunction with the Industry Training Authority (ITA). The Youth Work in Trades program is designed for those students who are currently working part-time in a trade, under a certified person, or who know of someone who might hire them to work in a trade. It is possible for students to earn up to 16 credits while in school. Four credits are assigned for every 120 hours of work completed.up to 480 work based training hours that count towards you trade credential. Trades are not what they use to be. As a Youth Work in Trains student, you'll "earn while you learn".