For Ricardo Robles, it's like coming back home.  This is Robles' old classroom and he shows the students in the class where he used to sit.  The class is called Spanish for Hispanics.  McClatchy  High School, in Land Park,  has a 26 percent Latino population.  The teacher, Mr. Rodolfo Orihuela, explains that he created this class so the students, who are already fluent in the Spanish language, can get an opportunity to learn about their heritage.   To break the ice Robles asks the students to draw the person nearest to them.    "It does not matter if you can't draw, just give it a try" says Robles.  After they spend 5 minutes drawing, he asks them to give the drawing to the person they dr