Bill Zwaan Jr., enters his 15th season at his alma mater of West Chester University. After spending his first 13 years on the staff of his father, Bill Zwaan, Sr., junior stayed on board with the Golden Rams when current head coach, Duke Greco, took over sideline duties. As he did for his father prior to senior's retirement, junior served as Greco's offensive coordinator for the Golden Rams and wide receivers.

West Chester's offense has resided in the top half of the conference ever since Zwaan, Jr., took over offensive coordinator duties in 2013. The Golden Rams' led the Pennsylvania State Athletic Conference in both scoring offense and rushing offense in 2018 while ranking third overall. The passing attack has also listed among the top eight all seven years. Along the way, three Golden Rams have taken home PSAC East Offensive Player of the Year Awards (QBs Cooper Jordan [2024] and Sean McCartney [2014]; and RB - Jarel Elder {2017]). Jordan, a three-year starter under center, has already set the school record for rushing yards in a career by a quarterback while also ranking sixth in school history in career passing yards per attempt and pass completion percentage.

In 2014, when McCartney was named the player of the year in the Eastern Division, West Chester set a school record by averaging 500.3 yards of total offense per game - the only time in school history that the Golden Rams eclipsed 500 yards per game. McCartney is one of only two signal-callers in school history to throw for more than 9,000 yards and 90 TDs in a career.

Zwaan, Jr., has produced offenses that have averaged over 400 yards per game as offensive coordinator from 2013 to 2018 and has reached the PSAC Championship Game three times (2015, 2017, 2018).

In 2015, Zwaan went to work grooming sophomore Pat Moriarty into a starting quarterback in his father’s complex system. The result was a PSAC East championship and a spot in the conference title game on the last week of the season. The young pupil threw 28 TD passes against 13 interceptions and averaged 241 passing yards per game. The following year, Moriarty split time with Andrew Derr, and the result was the conference’s fifth-best passing offense. The two combined to average almost 200 yards passing per game.

West Chester enjoyed a stellar 2013 campaign, setting the school record for wins in a single season and advancing to the national semifinals for the second time in school history. Under the watchful eye of his father, Bill Jr., pulled all the right strings with fifth-year quarterback, Sean McCartney, and West Chester won the Super Region 1 title for the first time since 2004.

The 2008 graduate of West Chester University also spent a year at Lycoming College, getting a taste for coaching at the college level, and now enters his 14th year overall as a college football assistant coach.

One of the school’s all-time great signal callers, Zwaan was inducted into WCU's Killinger Foundation Football Hall of Fame in 2021. Seventeen years after graduation, he still ranks sixth all-time in school history in career passing yards (6,298) and touchdown passes (65) while placing seventh in both career pass attempts (655) and completions (378).

Zwaan holds two school records at West Chester – average passing yards per completion (9.6) and average passing yards per attempt (16.7). He is one of only six former WCU quarterbacks to throw for more than 6,000 yards and 60 touchdowns in a career.

Aside from his statistics rolled up between 2004-07, Zwaan was at the helm for some of West Chester’s most successful seasons. The Golden Rams were 26-11 with Zwaan as their starting quarterback and reached the NCAA II playoffs all three seasons. In 2006, Zwaan guided West Chester to the second round of the NCAAs as the Rams won nine games, despite playing just four of its 13 contests at home. In November 2021, Zwaan Jr., was inducted into the WCU Killinger Foundation Football Hall of Fame.

Zwaan is married to the former Carolyn Kacergis, who also graduated from West Chester University where she starred on defense while serving as team captain of the nationally ranked women’s lacrosse squad that reached the national championship game her senior year. They have two sons, William and Jack.