The ending of the sending/receiving relationship with the Glassboro Public Schools was expected to cut the cost of educating high-school students by almost 25%.

[20][21] Their victory was the team's first State title and made them only the third South Jersey team to win a girl's state title in the sport, joining Eastern High School and Cherry Hill High School East.

[22] The 2019 team won the Group III title in two games against North Hunterdon (25-17 and 30-28) and advanced to the Tournament of Champions as the second seed, falling in the semifinals to third-seeded West Morris Mendham High School in two games (25-17 and 27-25) to finish the season with a record of 30-3.

[30] In spring 2009 the Williamstown softball team again defeated Toms River High School East to win the South Jersey, Group IV state sectional championship, with a three-run walk-off home run in the bottom of the eleventh inning.

[31] The team repeated as Group IV State Champions when they defeated Union High School by a final score of 3-0, allowing only one hit.

[citation needed] The football team won the South Jersey Group V state sectional championship in 2012, 2018 and 2019.

[33] The team won the 2018 South Jersey Group V state sectional title with a 56-20 win against Rancocas Valley Regional High School.

[38] The Band was 2010 USSBA "National" Champions, winning best percussion, effect, visual, and music.

The Williamstown Indoor Percussion Ensemble which competes in the TIA (Tournament of Bands) indoor percussion circuit was promoted to the National A Class during their 2015 season after their performance at Avon Grove High School March 14, 2015 and their performance at the WGI (Winter Guard International) regional at Unionville High School (Unionville, PA).