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