Congratulations on the TE offer to Loyola Chicago! It’s a great school, as many people have been mentioning in a different thread recently.
Depending on the engineering specialty your son is interested in, it could be very important to attend an ABET-accredited school for the specialty. This is not my area of expertise, however, so I would definitely check out more informed opinions than mine. Below are two threads (one of which was mine!) that could be useful, as Loyola Chicago is ABET-accredited for general engineering.