This is a common issue! All staff accounts default as teacher accounts with varying levels of access.
To ensure student confidentiality we remove all school staff access at the end of each school year, then reconnect with your IT department at the beginning of the next year and verify which admins are assigned to which school (or schools) for the present school year.
Please ensure you are signing in with the correct platform (Clever, ClassLink, Google) as that is how your admin access is provided.
If your admin access was just enabled, you need to completely log out, then log back into your Sown To Grow account for your admin access to update.
Once you log in using the correct method, check your view in the drop down menu at the top, right corner of your screen to see if an admin view is available and select that view.