What did Ben Ross announce in class?

In class, Mr. Ross announces that The Wave is part of a national movement to turn the country around. He tells the students that through the values of The Wave, they will be able to solve problems like inflation and unemployment. He adds that this afternoon, there will be a Wave rally where the students will hear from the movement’s national leader. The students in the class are enthusiastic, except for Laurie and David. They think that Mr. Ross has gone back on his promise to end The Wave. Mr. Ross puts Robert in charge of the class and escorts Laurie and David to the principal’s office. On the way there, he explains that this is all part of his plan to end The Wave.