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