In this paper the impact of various factors on teacher effectiveness is considered in the South African context. The Teacher Effectiveness Model is constructed to answer the research question whether it is the low quantity of teachers or predominantly their low quality that contributes to the basic education crisis of Quintile 1 to 3 schools in the Western Cape, South Africa. The model illustrates the impact of improving the quantity and quality of teachers within the province. This research question is answered when the system exhibits an increase of 13% in the success measure when the quantity is improved and an increase of 10% in the success measure when quality is improved. Improvement in both factors, however, gives the best result with a 17% increase in the success measure.

中文翻译：

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以学校为重点的系统改进视角

本文在南非的背景下考虑了各种因素对教师效能的影响。构建教师效能模型是为了回答研究问题，究竟是造成南非西开普昆泰1到3所学校基础教育危机的教师人数少还是主要是他们的素质低下。该模型说明了提高省内教师数量和质量的影响。当系统在数量增加时成功率增加了13％，而在质量改善时成功率增加了10％，就回答了这个研究问题。但是，这两个因素的改善都能带来最佳效果，成功率提高了17％。