Its website lists many achievements, including winning awards and media competitions, pioneering new systems of education and taking part in extracurricular courses and international student exchanges.

[3] The school was recognized in 2008 for its parliament system in an article in Maclean's magazine which said, "Since 1947, the school has held monthly parliamentary sessions(except during the coronavirus 19 pandemic) replete with parties and question periods.

In 2008, "ADHS visited Europe (France, Belgium, The Netherlands), New York, and British Columbia.

"[5] The school has many clubs for students, such as work crew, global virtual classroom, formal, world issues, envirothon, tech, chess, mathematics, and yearbook.

Christopher Perkins, the gold medal winner in the longbow category at the 2011 World Archery Championships in Turin, Italy, is a former student.