RIPON — For the upcoming 2012-2013 school year, students entering kindergarten must be 5 years old by Nov. 1. Therefore, the “Kindergarten Readiness Act” (Assembly Bill 1381) establishes a new class called “Transitional Kindergarten” (TK) for students who turn five between Nov. 2 and Dec. 2. In Ripon Unified, the TK class has been named “Promoting Readiness in Education” or PREP class.