Allen High School (Texas)

Allen High School is a public, co-educational secondary school in Allen, Texas (United States). It is the only high school in the Allen Independent School District.

Allen High School serves most of the city of Allen. Until fall 2006, when Lovejoy High School opened, Allen High School served high school students in the Lovejoy Independent School District, which includes the city of Lucas, most of Fairview, a portion of Parker and a small portion of Plano.

The first Allen High School, built in 1910 at the corner of Belmont and Cedar, was a two-story brick building housing six classrooms and an auditorium, and saw the first graduating class of eight students in 1914.

The second Allen High School was established in 1959 at the corner of Jupiter and Main Streets on land donated by Mr. Harris Brown.

In August 1999, Allen High School "2000," a new facility at the corner of Greenville and Rivercrest, opened to 2,200 students in grades 10 through 12. The former high school was converted into the Becky Lowery Freshman Center, named in honor of a former middle school teacher and school counselor. In 2018, the building was partly demolished and replaced with a new building on an adjacent plot of land on Greenville Avenue. The southernmost part of the school was renovated into the Dillard Special Achievement Center, while the northern section became a parking lot. The football stadium still stands. The new building became the Freshman Center and started serving grade 9 students during the 2018–19 school year. It had an enrollment of 1,634 in 2015–16.

A major expansion of the main high school campus was completed in 2011. This expansion included a new 1,500 seat performing arts center, an expansion of band hall space and a Career and Technology Education center featuring a student-managed restaurant open to the public, a student-managed apparel store with student-designed items, multiple new Mac labs, Mac-equipped rooms for the photojournalism, yearbook, commercial photography, audiovisual, radio, and newspaper classes as well as learning-classrooms for the medical education programs.

The final expansion was completed in 2018. This expansion included an auxiliary gymnasium and an expanded fine arts hallway. This expansion also included renovations to the gymnasium, cafeteria, library and academic-hallways, which include "huddle spaces" for collaborative learning. It also includes a food court with a Pizza Hut, Subway, and more.^{[better source needed]}

Allen High School offers the International Baccalaureate program to its students, with the class of 2002 being the first to graduate Full Diploma. AHS also provides Advanced Placement, Dual Credit, and elective courses. AP course enrollment at AHS is 52%.