|High School:||Seacoast United|
BEFORE UNH: Attended Goffstown High School. During his times with the Grizzlies, Ellis was a four-year starter with the varsity squad and captained the team his junior and senior year. He was also tabbed as Rookie of the Year as a freshman. Ellis was selected to the First Team All-State squad in 2012 and was also named the Most Valuable Player. Through his four years at GHS, he racked up 30 goals and 36 assists. Academically, Ellis graduated in the top 10 percent of his class and made honor roll all four years. In 2010, Ellis was named Math Student of the Year and was awarded Outstanding Performance of the year. He was a member of the National Honor Society and GHS Athletic Leadership.