Americas High School first opened its doors in September 1996. In order to cause minimal disruption to area high school students, the school's first classes consisted of 7th, 8th, and 9th graders. The second year, 7th grade was dropped and 10th grade was added. The 3rd year, the 8th grade was dropped and Americas was considered a standard Texas high school. The school's first graduating class was in 2000. The school gained magnet school status with the addition of Libertas, an academy for government, law and public administration