The Thumb version of the photo is what appears alongside a news story. The size of the thumb is dictated by the category Image settings.
News categories default to the Thumb option set at 80 x 80 unless larger specs are entered.
To have photos appear larger than normal thumbnail size, up the max Thumb option of 240 x240 - and then re-uploaded the images.
If the school would like them smaller than this, they can adjust those dimensions and will just need to re-upload the images again, for the setting to take effect.