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