>>515992210 (OP)
People in here will say it's because the students are black but if you actually do your research you'll find out that Lebron's school is designed to serve students who are behind academically, specifically, those who are struggling in reading and math.
To even be eligible for his school, students must test in the bottom portion(bottom 25-30%) of reading scores in their district. Obviously if you made a school of all white students but used the same selection criteria you would get the same results on the state's math tests.