下图展示了学生在各个学期的分布情况。图中显示了大多数学生所处的两个边界。第一个边界代表那些在学习期间没有任何假期、成功完成36个学期的学生（图中以黑色方块表示），因此他们在9年内完成了学校的三个阶段，这是完成三个学校阶段的最短时间。另一个边界代表每年为假期而休学一个学期（图中以灰色方块表示）、但所有学期均通过的学生；因此他在12个伊斯兰历年内完成了学校的三个阶段。大多数学生处于这两个边界之间（图中以斜线方块表示）。

The following chart demonstrates the distribution of students across school terms. The chart shows two boundaries within which most students fall. The first represents students who successfully complete 36 terms without taking any holiday during their study (as shown in the chart by a black square) thus completing the school stages in 9 years, the minimum time period to complete the 3 school stages. The other boundary represents a student who take one study term yearly for holiday (as shown by the gray square) while passing all terms; hence he completes the school stages in 12 Hijri years. Most students fall between these two boundaries (as shown by the diagonal squares).

对于因疾病、反复留级或其他任何原因而无法在12年内完成学校各阶段学业的学生，允许他们继续留在学校，直至年满20岁。图表的最后一栏（17至20岁）涵盖了这种情况。

As for students who cannot complete the school stages in 12 years for any reasons e.g. illness, repeated failure or otherwise, they are allowed to remain in school until they attain 20 years of age. The last column of the chart (from 17 to 20 years) covers this situation.