The Student Crossing Guards

 In addition to the voluntary crossing guards, there are some student crossing guards, who are from fifth or sixth grade, as well.

They help to organize the students going home after school.  They are consisted of fifth or sixth grade students.  There are 15 members every shift of a week.  Each member has his or her position.  When they see any violation, they have to give advice.  Sometimes they need to scarify their morning study session or lunch time.  Although a little bit tired, they responsibly and wholeheartedly sever others.