(To self assess your starting point, below are some general guidelines:)
Beginner: Someone who has not played or has played very little. Does not have the ability to rally 3 to 4 balls back and forth. Class focus will include proper strokes, racquet gripping, developing short rallies, and many more techniques.
Intermediate: Someone who has the basic understanding of gripping and strokes. Someone who can rally 3 to 4 balls back and forth. Class focus will include developing consistency, introducing shot selection, and court positioning.
Advance & Strategy: Someone who has the ability to keep a rally going with a good understanding of strokes, control, and shot selection. Class focus will include point play and game situations.