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