The plan for the first

flowchart TD

start

Declare arrays for student names and scores

Get student names and scores

For each student

Calculate the sum of the student's scores

Divide the sum by the number of tests

Assign a letter grade based on the average score

End for

stop. stop

The second scheme

flowchart TD

start

Declare arrays for student names and scores

Get student names and scores

Calculate the sum of all student scores

Divide the sum by the total number of scores

Print the average class score

stop. stop

The third scheme

flowchart TD

start

Declare arrays for student names and scores

Get student names and scores

For each test

Calculate the sum of scores for the test

Divide the sum by the number of students who took the test

Assign a letter grade to the test average

End for