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