Code to drop the lowest test scores using arrays..

I need help using arrays and the code.. I have 8 text boxes, 8 labels, command.
the text boxes are arrays, and labels are arrays. i want to calculate the grade for my class.. I want to read the first 6 text boxes and drop the lowest points.. please try to help me by sending me a example of what the code should look like. my email addy is rbarot@hotmail.com