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