What episode in the vampire diaries do Elena and Damon go to the high school?

In "The Vampire Diaries," Elena and Damon go to the high school in Season 1, Episode 4, titled "Family Ties." In this episode, they attend the school's annual Founders' Day celebration, where tensions rise and secrets begin to unfold. This event serves as a backdrop for the developing relationship between Elena and Damon amidst the supernatural happenings in Mystic Falls.