She first appeared in "Schooled!", where Lincoln, Clyde, Liam, Rusty, Zach, and Stella go to her class. When Lincoln doesn't see his name there, she points out that Lincoln goes to class of Mr. Bolhofner and directs him to where his class trailer is. Though she does give him a juice box for the road.
In "Rumor Has It", she's in charge of looking after students during a school trip to the quarry which Bolhofner will be attending. Due to the wrong bus being booked, Mr. Bolhofner stated to Mrs. Salter that he'll take whoever doesn't fit on it. That ends up being Lincoln, Clyde, Liam, Rusty, Zach, and Stella. While Mr. Bolhofner goes to get the school van, Mrs. Salter is shown to have believed the rumors about Mr. Bolhofner and instructs the bus driver to pull out before "Skull-hofner" returns. Mrs. Salter later texted Mr. Bolhofner that the field trip was cancelled due to the bus getting stuck in 3 ft. of Flippee Syrup. She was later present when Lincoln and his friends disproved the rumors about Mr. Bolhofner.
According to Lynn, Mrs. Salter is one of the nice teachers.
She is a tall woman with light skin shoulder-long black hair, red lipstick and two pairs of eyelashes. She wears a pink headband with daisies, big red hoop earrings, a light yellow dress, a red round bead necklace, and brown flats.