Implementation of the Munn/Dunning proposals in Scotland for assessment and certification for all depend on the results of a three year program of which a major part has been the development of new courses and appropriate assessment instruments in Foundation English, Mathematics, and Science for the lowest 30 percent of the ability range. The main thrust of the development in assessment has been to define grade-related criteria applicable to both external and internal assessment. In this way the external examining agency can monitor the schools' internal assessment. Comparisons will be carried out in 1983 on a mode by mode basis. This will enable an accurate profile of pupil achievement since criteria are stated in positive subject attainment terms. The work is now being extended to the General and Credit levels in eleven subjects with the definition, over the next year, or courses, assessment instruments and grade-related criteria for seven articulated award grades spanning the whole ability range. (Author/PN)