"班级"	"不及格科目数"	"学生人数"
"1班"	4	10
"2班"	1	2
"3班"	1	6
"4班"	5	6
"1班"	5	9
"3班"	2	6
"2班"	5	7
"3班"	4	4
"4班"	3	3
"2班"	2	3
"4班"	4	4
"2班"	3	5