ABC’s Plumbing Apprenticeship/Craft Training Program is a four year program with 160 hours per year of classroom instruction. Classes are held one night per week, 40 weeks per year. Apprentice Plumbers receive on-the-job practical instruction working full time under the supervision of licensed Journeyman Plumbers at their 'day job'. They receive instruction from trained instructors one night a week at the apprenticeship classes.