25 years ago, when the Washington Jewish Film Festival was founded, there was only a slate of eight films. This year, there will be “nearly 70 films and over 100 screenings,” according to current director Ilya Tovbis. One of those films is WJFF founder Aviva Kempner’s new documentary “The Rosenwald Schools.” The film is centered on Julius Rosenwald, who gave money to help build over 5,000 schools for African American children all over the South. Ironically, Rosenwald himself never finished high school. He also gave grants to many well-known African American artists, including Langston Hughes and Gordon Parks.