"班级"	"不及格科目数"	"学生人数"
"2班"	3	4
"3班"	3	4
"4班"	1	8
"1班"	1	10
"3班"	4	9
"1班"	3	1
"3班"	2	3
"2班"	4	5
"3班"	1	7
"4班"	3	2
"4班"	5	6