in HK (Kids with very poor all-subjects average term work+test score will repeat the grade) 

https://qz.com/africa/859222/south-africas-education-department-reduced-the-pass-mark-for-mathematics-to-20-in-schools/

"Given the high number of children at risk of being held back because of their math scores, a departmental circular (pdf) published on Dec. 8 by the news website GroundUp decreed, students in grades seven, eight and nine who met all the minimum requirements to pass except in mathematics should be pushed to the next grade if they attain a minimum of 20% in mathematics..."