The educational programs that were developed cater to both sexes . Grading scales were prepared to gauge the students ' performance on school . Grading scales in the USA and Saudi Arabia differ . In the USA , marks were given on the scale of A to F . In the criterion-referenced system , the equivalent grades of these to 0 to 100 percentile are as follows : A 95-100 or 90-100 , B 85-95 or 80-90 , C 75-85 or 70-80 , D 65-75 or 60-70 , and F is given...











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