|High School:||Seacoast Academy|
BEFORE UNH: Attended Timberlane Regional High School. A four year starter, Ericsson was also captain of the squad his junior and senior years. On the field, Ericsson was named the Timberlane Soccer Rookie of the Year in 2009 and earned the Timberlane Soccer Owl Award (MVP) in 2010. As a junior, Ericsson tallied the most goals on the squad, earning the Golden Boot Award. He received multiple other honors, including an All-State Honorable Mention (2010) and was named to the All-State Second Team. Most recently, he was named an NHIAA Scholar Athlete in 2013. During his club career, he had stints with Seacoast Academy U-18 team and played with the New Hampshire Classics (USYS Region 1). With the Classics, he led the team to four consecutive titles. He also played a year with the New Hampshire Olympic Development team and the New Hampshire Phantoms of the Super-Y League.