The promotion is valid for all new customer bookings in August. | Celebrate 10 years of Stanford with 10 lessons for $100. | The promotion is valid for all new customer bookings in August. | Celebrate 10 years of Stanford with 10 lessons for $100. | The promotion is valid for all new customer bookings in August. | Celebrate 10 years of Stanford with 10 lessons for $100. | The promotion is valid for all new customer bookings in August. | Celebrate 10 years of Stanford with 10 lessons for $100. |