For those still struggling with accessing the Kindergarten Google classroom and want to:

Go to https://classroom.google.com/

Log in with your student’s student number @dearbornschools.org (don’t forget the dearbornschools.org part)

Password is your student’s birth date: mm/dd/yyyy

Click on the + symbol in the right hand corner

Enter the class code: y7yfc3f

Hope this helps.