Princeton Academy's mission is to develop young men with active and creative minds, a sense of understanding and compassion for others, and the courage to act on their beliefs.

Handwriting Without Tears meets the fine motor needs of boys through its clear, simple letter formation and interactive learning style.

In each grade level, content is divided into six strands: number and numeration, operations and computation, data and chance, measurement, geometry and patterns, functions, and algebra.

Students read and study fiction of various genres, non-fiction, short stories from the Junior Great Books program, plays, poetry, and films.

In response to literature, students acquire thinking, planning, drafting, and editing skills through expository, narrative, and creative writing.

The social studies program aims to develop and strengthen students’ skills in reading and research, observation and listening, recording and organization, interpretation and analysis, and clarity in written work.

The William E. Simon Chapel Library features a five-panel silk painting of the Mater created by Princeton-area artist Juanita Yoder.

Years of needs assessments, feasibility studies, and financial estimates translated into a two-phase renovation project that positioned the school for future growth and employed smart energy alternatives to conserve resources, and the 2012–13 school year for students started amidst construction vehicles, high-tech machinery, underground conduits, and demolition crews.

Thanks to architects and educators who recognized a unique "teachable moment," students learned first-hand about building, geophysics, and environmental stewardship.

The project's green and sustainable features included a geothermal field to heat and cool the school more efficiently, a layer of closed-cell spray insulation in exterior walls, insulated glass units in the windows, an updated roof design to allow more natural light and provide space for photovoltaic panels in the future, and compact fluorescent and LED light fixtures with occupancy sensors in each room.

Additionally, Princeton Academy petitioned the Township to minimize the number of lights along the driveway in order to support a "dark sky" philosophy.

Because of these early initiatives, Princeton Academy and the surrounding community benefit from the natural habitats that flourish in large undeveloped meadows and enjoy incredible stargazing from the campus.

Building and renovation projects provided a wealth of hands-on, on-site science lessons, including a greenhouse designed to be a stand-alone structure requiring no man-made heating input.

The Athletic and Convocation Center was built with an asymmetrical roof with a much larger area facing south, upon which solar panels can be placed in the future.

It was built as deep into the ground as possible to take advantage of heat transfer and, due to large windows on the north wall, uses mainly natural light during the day.

The east wing of the school building has a redesigned roofline to allow for larger north facing windows and a sloped roof to the south which provides greater surface area for solar panels.