on-line business management services for flight-training school businesses, namely, providing on-line computerized student flight scheduling, and optimizing utilization of plane and instructor time against student time-budgets; providing purchasing services for flight-training school businesses, namely, providing computerized online ordering services featuring products and services of outside vendors of interest to flight-training school businesses, and students and instructors thereof, providing analysis of such products and services of outside vendors and arranging, managing and facilitating revenue-sharing programs with such outside vendors