Christopher Burgard

Chrissy gets lice, and Jason, Ben, Mike and Luke have to clean house while Maggie and Carol are away.

Ben wants to take a college entrance exam, and gets mad when he hears his dad make a disparaging remark about his intelligence. Carol's feelings for Dwight take a blow when she meets the young girl living at his place.

Ben takes karate lessons to deal with a school bully.

Kate wants to go skiing, and Mike doesn't have the money. He finds a bargain - if twenty rooms are booked, the twenty-first is free. He gets Ben, Carol, Dwight, and Luke to go, and the others are supposed to be Ben's chess club. But, Ben takes the school rowdies instead.

Luke runs into an old friend, Barney, the only honest three-card monte player. The Seavers invite him to Luke's birthday party, where Luke realizes his old pal is only pretending to be honest.