Please click on the link below to look at your child's grades:
For parent with multiple children who are having issues logging in and see all of your children's grades at once, here is the suggestion from Jupiter Grades:
In order for you to be able to log in with one child's name, and access all of your children's grades, you need to reset each password until they are the same for all five of your children (resetting your PARENT password, of course, not the student's password).
Then, you'll be able to log in with any of your children's names, with that one universal password, and see all of them together.
Additional information is here, under the section called "Multiple Children":