Aldershot School is a grade 7–12 school located in Burlington, Ontario. Although the current school building was constructed in 1959-1960 and opened in 1961, the original Aldershot School was built in 1870, making the name the oldest in continual use for an educational institution in Halton.

Originally a high school (grades 9-13, later cut back to grade 12), grades 7 and 8 were added in 2001 to make use of spare capacity. The school's enrolment is 1010 students as of the beginning of the 2023-2024 school year, with 209 students in elementary and 801 students in secondary.

The school's Latin motto, Veritas Nos Ducat (meaning "Truth Shall Lead Us"), speaks to a remarkable honour system in place during the 1970s. At that time, any misplaced belonging in the school was essentially guaranteed to make its way to its rightful owner, and in some cases, take-home exams were permitted, bearing that the student not use outside information and write the school motto on his or her test. The remnant of this implicit system is in the school's also traditional, annual Honour Society listing, which notices students who have achieved distinctions in academics at a level of above 80% in every course taken.

Scores based on EQAO scores and literacy tests place Aldershot far and above other schools in Halton, having been ranked first for performance by the Halton District School Board's (HDSB) annual reviews. It was the top rated school in Halton according to the Toronto Sun (2007), and the 13th best school in the Greater Toronto Area. From 2003 onward, the school's rankings have fluctuated within the top 50 schools in the province, arriving at the 2007 rank of No. 16, and 2008 rank of No. 12 school in Ontario, according to the Fraser Institute.

Annual events run by the school's Student Leadership Team include Terry Fox Run (September), Relay For Life (May), Spring Carnival (May), and Beach Day (March). Other regular events include pep rallies.

In recent years, fewer events have been organized by the student council (formerly the SLT) as student interest has declined.

There are also many "school spirit" days throughout the year, during which students may partake in an activity to show their school spirit (e.g. Jersey Day, Ugly Sweater Day, "Fancy" Day).

The school's administration has not organized the annual senior prom since 2010, however, since then, the graduating class has taken it upon themselves to organize the event.

Aldershot's hockey and baseball teams are referred to as the "Aces". All other teams are referred to as the Lions.

The school's performance in athletics has been marked by numerous regional wins, despite being one of the smallest schools in Halton (in Halton D3 football, Aldershot is half the size of the next smallest school, Lester B. Pearson) such as senior boys' volleyball OFSAA (Ontario Federation of School Athletic Associations) favorites in 2006 and 2007.

The school has a Senior Concert Band (grades 9-12), Junior Concert Band (grades 7-9), Choir (grades 7-12), Jazz Band, and occasionally a String Ensemble. The groups all play at an annual Music Night and sometimes at other events or festivals.

Aldershot has regularly participated in regional and provincial music competitions like MusicFest Canada and the OBA Concert Band Festival with both the Junior and Senior bands achieving gold, silver and bronze medals several times.

In 2019, Aldershot become the first school in Halton to begin the I-STEM program. The letters in I-STEM stand for Innovation, Science, Technology, Engineering, and Mathematics. The program is designed to take students through grades 9 to 12, allowing high schoolers to develop a wide variety of skills including engineering design, design thinking, entrepreneurial thinking, and global competencies, all within the framework of innovation.

Aldershot is home to the ECO Studies program - a Specialist High Skills Major program in conjunction with the Royal Botanical Gardens, Ontario, which allows students to earn a specialized diploma. The ECO Studies program also runs an environmental leadership program for elementary students called "ECO Rangers", which has received exceptionally positive reviews from the elementary schools who have participated.

The Aldershot School mascot is a stylized golden lion, most often represented clawing upward to a stylized medieval crown. A traditional symbol/marking at the school is a simplified pawprint (consisting of four circular shapes).

Aldershot is known for having a very strong Link Crew program whose mission is stated as "creating positive change by building positive relationships". Aldershot is also noted for having a creative breakfast program for students, and a range of extracurricular options on par with schools of over 2000 students.

The first Student Trustee to come from Aldershot was elected to the HDSB as 2007-2008 Student Trustee Jason Karmody.

• Melanie Booth, Canadian Women's Soccer Team player
• Josh Bradford, guitarist for the band Silverstein
• Kyle Burns, director, writer
• Jim Carrey, actor
• Gordon Deppe, guitarist for the band Spoons
• Sandy Horne, bassist for the band Spoons
• Chandler Levack, writer and filmmaker
• Derrick Ross, drummer for the band Spoons
• Chris Schultz, football player
• Brett Wickens, Creative Director; keyboardist for the band Spoons; founder of Ceramic Hello

• Education in Ontario
• List of secondary schools in Ontario
• Halton District School Board

• Official website
• HDSB homepage