When Lancaster High School students filled the 450-seat campus theater the morning of April 17, they had no clue why they were called or what to expect. All they knew is that they were invited to the gathering because they are black. The meeting invitation sent out to parents read: "Black and African American Students, you are cordially invited to attend a special event with African-American staff, students and parents." Meeting organizers say to help black students feel more comfortable to express themselves, no other students of any other race were invited to the meeting - including nonblack administrators. Even...