Description Internet Registration has not begun yet. Check Registration Dates in details. The Town of Danville offers top-flight instruction from tennis professional, John DeMartini. He is USPTA certified Elite Professional and has been teaching pro for over thirty years, formerly at Stanford University. . This tennis program features classes for all skill levels and limits class size to 4-6 students, for individualized instruction. Advanced Intermediate: Consistent placement with ground strokes and serves with spin. No Class 4/10 - Make up Class will be 5/29. Class sizes and/or levels may be changed due to insufficient enrollment. students can transfer to a different class upon instructor's approval and if space is available. The instructor reserves the right to change student's class level if necessary. Bring one unopened can of tennis balls to first class and a tennis racket to all classes. Osage No Class 4/10 Make up Class will be 5/29 Age Category Adult Location OSP: Tennis Court B at Osage Station Park (OSP)OSP: Tennis Court A at Osage Station Park (OSP) Instructor John DeMartini