books repetition rate
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# repetition disorder
# The study of school failure and repetition
# About failure and repetition
# Career failure
# Pass and fail the test
# in case of failure
# What is the hardest thing to fail?
# Reason for failure
# school failure
# Men about failing
# The position of failure is fair
# Companions about failing
# About the reasons for school failure
# School failure problems
# class failure
# failure novel
# Fail the exam
# About failing in class
# Normal ratio of sedimentation velocity
# decay rate
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Source: wikipedia.org
نسبة الرسوب (Info)
نسبة رسوب المتقدمين للامتحانات القديمة، قبل عام 2010 كانت منخفضة وتصل لأربعة بالمئة فقط. لكن نسبة الرسوب في الامتحانات الجديدة التي طورت في عام 2010 ارتفعت إلى 30%. وتم تحديثه فيما بعد لتنخفض النسبة إلى 20%.
