Result
The result of the query is as follows
Do you have pet? : Yes Students high school years 4/4 number of 23 people.
Students high school years 5/5 number of 31 people.
Total 54 people are average 80.60%
No Students high school years 4/4 number of 6 people.
Students high school years 5/5 number of 7 people.
Total 13 people are average 19.40%