"班级"	"不及格科目数"	"学生人数"
"1班"	1	2
"2班"	1	2
"3班"	2	3
"4班"	1	8
"1班"	5	10
"2班"	2	6
"4班"	3	1
"2班"	3	7
"4班"	4	9
"1班"	3	2