Smith has recorded over 1,800 points during three seasons of high school basketball.
Lavelle became the fourth Lady Lion to hit the portal.
Peters joins a loaded incoming recruiting class.
The Nittany Lions will play in the Big Ten Tournament semifinals on Thursday.
The Grammy Award-winner is best known for his song "There Was Jesus."
Barraclough is the first reported Nittany Lion to enter the portal this offseason.