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Table 1 Mean grades obtained in medical school from students who came from public and private secondary schools for each academic year

From: Do students from public schools fare better in medical school than their colleagues from private schools? If so, what can we learn from this?

Curricular year Private secondary school (A) Public secondary school (B) Mean difference Cohen’s d p-value
  N Mean (SD) N Mean (SD) (A-B)   
1 767 12.8 (1.2) 933 13.4 (1.3) −0.6 0.48 < 0.001
2 655 13.7 (1.1) 823 14.2 (1.3) −0.5 0.42 < 0.001
3 550 13.7 (1.3) 713 14.1 (1.4) −0.4 0.30 < 0.001
4 435 15.1 (1.2) 616 15.4 (1.2) −0.3 0.25 < 0.001
5 347 16.1 (1.1) 492 16.3 (1.0) −0.2 0.19 0.003
6 238 17.5 (0.7) 356 17.4 (0.7) 0.1 0.14 0.530
  1. SD – Standard Deviation