grades.csv

student_id,name,math_grade,eng_grade,sci_grade,his_grade,semester
1,Jacques,92,82,88,98,1
2,Rodney,72,80,82,100,1
3,Jeremy,74,92,84,96,1
4,Henry,98,92,94,82,1
5,Sunny,100,90,94,80,1
1,Jacques,94,88,82,100,2
2,Rodney,70,83,85,97,2
3,Jeremy,81,88,78,99,2
4,Henry,92,100,100,78,2
5,Sunny,99,93,99,82,2
1,Jacques,100,78,80,100,3
2,Rodney,81,82,87,100,3
3,Jeremy,88,92,79,96,3
4,Henry,95,99,100,82,3
5,Sunny,98,94,88,82,3