Hi there,this is my first request in this forum,i hope i will get reply soon,now the problem,i want to know the Top 3 "Student" record of each "Class" with each "Section".e.g

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roll# Class Name Section Rank
23 1 Nabil A 1
31 1 Tori A 2
43 1 Jeff A 3
20 1 Mark B 1
03 1 Habe B 2
. . . . .
. . . . .
. . . . .
04 10 Xyz - 1
76 10 Abc - 2
04 10 Sdf - 3

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So in this way i can see the summary of the Top Student in the School by listing the Top 3 student of each class.