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