If you have previously registered with Total Registration and do not remember which email address you used, please click the link Need a Reminder of the email you registered with in the past? at the bottom of the school's registration page:
You will have two options - 1) Enter the student name and ID number, or 2) enter the Parent Email. If you are a parent, you should choose this option so the email reminder will be sent to your email directly.
If this does not help, you will need to contact your school and look up the email you used in the past.