1. A web-based, interactive and educational computerized simulation for combining a student-user's ability to create and operate a student-created business with a dynamic, interactive simulated stock market incorporating student-created businesses, said simulation utilizing a method comprising: teacher users, inputting on a computer through web-based computer inputs, the essential criteria of a business plan for students to complete; student-user's inputting on a computer through web-based computer inputs said criteria of said detailed business plan to define a fictional or a current, existing product or service and developed around said product or service, wherein once completed the business plan becomes immediately a part of the simulated stock market and represents a business or company in that market with said student-user becoming a CEO of a selected company; student users managing an individual investment portfolio through buying or selling of ownership of shares in each other's said business; and adapting said business plan criteria by allowing a teacher-instructor to modify and customize said simulation exercise experience by: (a) selecting of teams or individuals to compete in the simulation; (b) [selection of said student-participants in said teams or as said individuals as either “business and trade” or “trade only” designations; (c) creation of a bulletin board message used for frequent, whole-class information sharing; (d) the creation of the simulation environment to match the time, place, and ability of the student-user thorough manipulation by the teacher-user through typing into web-based fields; (e) adding dynamic news into the simulation which can automatically influence company share prices and also encourage student-users to adjust their business plan and portfolios; (f) selecting or creating additional business plan components to be completed online by said student-users; (g) selecting start and end dates for trading; (h) selecting start prices of $20.00 or more; (i) selecting a price weighting for individual student-trades and their effect on share price; and (1) outputting the adapted and modified business plan criteria to the computer.