Miss/Guided (2008) - 1x05 - Pool Party

Becky finds herself in charge of planning a 40th anniversary party for the oldest and most hated teacher in school history. When Becky's pushed to her limit, her good intentions backfire and she unleashes 15 years of anger on Mrs. Pool -- resulting in Mrs. Pool's untimely death. Meanwhile Tim and Bruce realize that they have something in common -- compromising relationships with Mrs. Pool.