Hello @rcoyle,
Thank you so much for using our theme Education Base. Please add the below css code to hide the featured section on mobile.

@media only screen and (max-width: 767px) {
.image-slider-wrapper.home-fullscreen.full-screen-bg {
    display: none;
 }
}

For more dedicated supports, please visit theme official support forum.
Hope, this will help to solve it.
Regards

• This reply was modified 2 years, 4 months ago by kafleg.

If the above css code is not working, please add the below css codes on Appearance > Customize > Additional CSS, Hope this will help to solve the issues.

@media only screen and (max-width: 767px) {
.image-slider-wrapper {
    display: none !important;
 }
}

Regards