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