The National Stock Market Simulation (SMS) is a classroom activity played by teams of students from across the country . The SMS is most often played in math, social studies and business education classes in grades from 4 to 12. Student teams are each given a virtual $ 100,000 in cash and then simulated buying and selling of stocks, bonds and mutual funds. The teams attempt to increase the value of their portfolios over a ten-week period by buying and selling securities.