 At Mary E. Baker Elementary School in Brockton, Massachusetts, south of Boston, they are cheering for their PE teacher, Mrs. Kathleen Leszczynski. Mrs. L., as they call her, has taught at Baker Elementary for 25 years. Devoted to her students for decades, Mrs. L. retired this year to care for her husband, Gene, who was battling cancer. She was right there by his side when he died just weeks ago. And her school was there for her.