This bulletin is the sixth in a series that provides information on a collaborative project known as MainFrame to develop youth training programs in Great Britain. It describes the assessment procedures used in the youth training programs and examines project progress toward its main objective--the development of a unit credit transfer system--and its relationship to national developments on certification. The bulletin is organized in three sections. The section on assessment describes the Training Inventory form on which is recorded trainee progress, as well as on-the-job and off-the-job training assessment. Next, a section on accreditation focuses on development of a package to accredit trainees for their prior learning and establishment of a unit credit transfer system. The section on certification discusses attempts at articulation with existing schemes to achieve the aim of offering "credible certification" through a unit credit transfer system. A concluding commentary critiques the project's achievements, especially as regards investment of resources. Sample forms are provided. (YLB)