The lights in the back are the old fluorescents that most DOE schools were equipped with for years, and are deemed unsafe for prolonged exposure. As each strip dies out, it gets replaced with the new lights you see in the front. It’s typical to see classrooms with a combination of old and new lights. The weekend before school opened this September, the charter school laid out $400,000 for a haz-mat team to install all new lights in their classrooms. The lights installed in Success were all taken from storage where they were scheduled to be installed in other schools over the coming months.