[2] Alaska Native Pacific Islander Races [5] Construction of a new high school was approved in a 1967 referendum.

Parsippany Hills also offers its students a wide range of Advanced Placement (AP) courses.

96.8% of Parsippany Hills teachers hold a master's degree or doctorate in the field that they teach in.

In addition, all students must pass the New Jersey High School Proficiency Assessment (HSPA) in their junior or senior year.

Past productions have included The Odd Couple: Female Version, West Side Story, Guys and Dolls, South Pacific, Picnic, Zombie Prom, The Importance of Being Earnest, Bye Bye Birdie, Aida, Seussical, Legally Blonde, The Drowsy Chaperone, and 42nd Street.

In the spring 2007 production of How to Succeed in Business Without Really Trying, the Parsippany Hills Players saw a record audience.

At the All-state championships in 2006, they tied with long-standing rivals Verona High School, but won more captions than any other band.

[22] The football team competes in the Patriot White division of the North Jersey Super Football Conference, which includes 112 schools competing in 20 divisions, making it the nation's biggest football-only high school sports league.

[25] Sports offered at Parsippany Hills include tennis, football, soccer, cross country running, field hockey, volleyball and cheerleading in the fall; swimming, basketball, ice hockey, wrestling, track and cheerleading in the winter; and baseball, softball, tennis and golf in the spring.

[27] The softball team won the Group III state title in 1981 and 1982, defeating Cherokee High School both years in the final game of the playoff tournament.

[29] The 1982 team won the program's second consecutive Group III championship with a 3-1 one-hitter at Mercer County Park against Cherokee to finish the season 22–1.

[33] The 2007 boys' soccer team won the North II, Group III state sectional championship.

[citation needed] The football team won the North II Group III state championship in 2014 and 2019.

[36][37] The team won the 2019 North II Group III title with a 28–21 win against West Essex High School in the playoff final.

[39] The team beat Haddonfield by a score of 1–0 in the 2016 championship game, earning the program's first state title.

[42] Parsippany Hills offers many after-school activities, from Academic Decathlon, Junior State of America, FCCLA, DECA, Key Club, Habitat for Humanity to FBLA, along with a steering committee for each grade, which functions as a smaller student council for that grade along with two faculty advisors.