Aquinas Diocesan Grammar School now uses a new Parent App called, “School Gateway”, this will eventually replace the current Sims Parent App.

Between 1st March and 31st March 2022 there will be a period of “grey-switch”. During March 2022, all information will be sent out using both platforms (School Gateway and SIMS) but from 1st April 2022 the sole platform will be the School Gateway App for messaging and engagement. Ipay Impact will continue to be the school payment gateway for school meals, trips, shop etc.

All school related communication, newsletters, reports, timetables, attendance figures and club bookings will go through School Gateway – it is the central hub of information for our parents – so to stay up to date with what’s going on at school make sure you download the app for free. Just search School Gateway in your App store and download.

Apple iPhone users, download the app here:

Android phone users, download the app here:

Your login details will be automatically generated using the contact information Aquinas already has, so please make sure the details we hold for you are up to date. You can check and change these details by sending an email to

If you have any questions or would like some more information, please see the School Gateway site here:

You can also login to the online version of School Gateway via this site if you do not have a smart phone, although we do recommend using the app if possible as it makes it far easier to get hold of parents when we need to.