At St. Thomas Aquinas, the current principal is Ms. Kathleen Moro and the vice-principals are Mr. David Agro and Ms. Melissa Giardina (for the IB Programme) as of November 2024.

The school community prides itself on athletic achievements, and STA fields teams known as the "Raiders" in a wide variety of sports (see below).

In the northern two-storey portion of the school were the gymnasium, cafeteria, staff room and classrooms for the science, fine arts and technical studies departments.

[1] A major step forward came when the government of Ontario announced a $15 million grant in early September to go towards the replacement of the school building.

[2] However, requiring a further $18 million for the project, the Halton Catholic District School Board began to look into other options to continue to raise money, in particular a plan that would have students diverted from St. Ignatius of Loyola and Holy Trinity Catholic Secondary schools to St. Thomas Aquinas in order to qualify for provincial grants.

The Southwest Central Oakville Residents Association (SCORA) was formed in 2008 to protest the school board's "disregard" for the natural setting, the elimination of grass sports fields, the addition of asphalt parking lots, the removal of "hundreds" of trees from the location, and the plans for "mega-lights" on the sports field.

By June 2009, the portion of the school south of its main gymnasium had been demolished, though construction of the new building had not yet begun.

[6] The new school building has three levels and features a theatre, two gymnasiums, a full range of tech and co-op classrooms and an interior running track.

The school is the only Catholic school in Oakville that offers IB (International Baccalaureate), a "non-profit" educational foundation offering four highly respected programmes of international education that develop the intellectual, personal, emotional and social skills needed to live, learn and work in a rapidly globalizing world.

Inside the school, there are 4 different stairwells, providing easy access to all three levels ensuring that students and staff can get to where they need to go quickly and easily.