Great Schools is a website and a tool used by parents to research what school will best fit their student. That means that making sure the information on Great Schools site is correct, and up to date is paramount during enrollment season.  There are a few simple steps that you need to follow in order to reclaim you school on the Great Schools website.

Great Schools has a ton of information on how best to change data of a school. One of the requirements in order to do this is to claim the school under a school account. To do this follow the instructions within the first article bellow titled Reclaim School. If you have multiple schools represented on great schools then follow the second article:
In order to reclaim your school under one account you have to create a schools account with your school email i.e must end with the url of your school. (See article one for details). They will verify you are who you say you are, and then they will transfer the claim to you school account. Just make sure you use your school email. Once you gain claim to your school. you should be able to change everything associated with the running of the school. You can change start and end times, contact information and more. That is all it takes