I would like to weigh grades with some subjects but not with others, can I do that?
Yes, see this page: Grade Weight
Can I use Grades and Attendance for more than one child?
Grades and Attendance is designed for one student. To use grades and
attendance for more than one child, use "Save As" from the file
menu of the program and save a copy for each child. I recommend naming the
file after your child and grade: for example: Anne_5th.
Can I change the calendar? No the calendar is password protected.
Can I rename the tabs? Yes, right-click the tabs and rename them.
Can I change the color of the tabs?
Yes, right-click the tabs to change their color.