Thoerner would go on to attend Beckman High School where he played on the freshman team his first year there. He had the option to play on JV but decided to stick with his original decision because of the relationship he had with his coach, Alvin Galloway, and ended up leading the young squad to become the best freshman team in Beckman history.
The guard spent the rest of his high school career on the varsity team where he was a catalyst for the team’s steady improvement. Thoerner credits his head coach John Goins for always having faith in him. In his senior year, the team won the school’s first league championship, one of the things he is most proud of especially as the team captain. Thoerner left Beckman as the career points leader (1,652), 2019 League MVP, All-CIF Team, and 2019 Beckman Athlete of the Year.
At the end of the summer 2019, Thoerner shipped off to Massachusetts to attend Division II Tufts University. The first semester was very tough for Dylan adjusting to the far move away from home.