SIMS Parent is the new platform that has now replaced SIMS Learning Gateway.
You should have received your individual activation email which will enable you to register. (If you have not received the email please contact the school)
Once you have registered for an account you can access this via the SIMS Parent App (available via Google Play or the Apple App store) or by visiting www.sims-parent.co.uk
Quick Link - SIMS Parent Instructions