Springfield Elementary School

An orangey-yellow building with purple accents (WC: Supergirl Meets E.T.) with an "Old Glory" (COMIC: Backtime) flag hung up on a flagpole outside of it was present in a city titled "SP_ING__EL_" when E.T. ran through it. A classroom inside the building had green walls and a dark green chalkboard. (WC: Supergirl Meets E.T.)

Behind the scenes

 * Springfield Elementary School was the main school in The Simpsons.
 * As a result, the school was featured as a location in Springfield in the The Simpsons Adventure World in NOTVALID: LEGO Dimensions, from which the gameplay seen in the webcast was taken.