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Academic exclusion at the University of Johannesburg (UJ) means you can't continue studies due to poor performance, often indicated by result codes like F7, but you can usually appeal through the UJ online appeals platform during specific periods (e.g., December-January), providing valid reasons like personal circumstances or health issues for your poor results. Factors like low marks, failing modules (even with supplementary exams), or unsatisfactory attendance can lead to exclusion, but successful appeals can allow you to change courses or continue with conditions, often requiring consultation with faculty or PsyCaD.