sentences:  Balboa historically has had a school population of primarily ethnic minorities.Between 1993 and 2010, the White population at Balboa totaled less than 5% of yearly enrollment, but the incoming freshman classes of 2013 and 2014 spiked the white population up to 5.4%.Up to 2003, the predominant ethnic groups at the school alternated between Hispanic (24–30%) and African American (19–24%).