The apprentice shall, within 30 days of employment, enroll in and attend classes in related subjects at a school or other training facility approved by the State Electrical Apprenticeship Committee for not less than 144 hours per year or as approved by USDOL/OA. The Apprentices shall also take advantage of provided instruction in recognized apprenticeship classes during periods of temporary unemployment. School attendance in all cases shall be obligatory; failure to attend these classes in related instructions may cause the apprentice to be disciplined or his apprenticeship agreement cancelled. Apprentices are to attend school on their own time, and such school attendance shall not be considered as hours worked. The Local Apprenticeship Committee shall not recognize any apprentice with whom they have not signed an apprenticeship agreement or who is not registered with the Arkansas Department of Labor and OA.