Continental Math League (CML) is an international competition for elementary to high school students.  There are 3 rounds of contest for 2nd & 3rd grade and 5 rounds of contest for 4th to 8th grade in a school year.  Each contest consists of 6 word problems.  The maximum score for each round is 6.  The sum of top 6 students' score will become the team score of each grade.