Change in the Air (S05E02)

The first day of school is upon the Heck family, and Sue finds herself feeling a sense of freedom she's never felt before with Axl not around to make her campus life miserable. But Brick, who is beginning middle school and afraid of getting a swirlie, avoids the bathroom at all costs. Meanwhile, Frankie becomes jealous of Mike when she discovers that Axl calls and returns his texts but won't do the same for her; and Sue's feelings for Darrin surface once again when Mike calls him over to help fix the air conditioner. (ABC TV Network)