|High School:||Franklin Pierce HS '08|
2009: Listed as a reserve at free safety on EWU's preseason depth chart.
WSU: Played baseball for a short time in fall 2008 at Washington State University before transferring to EWU.
HS: Graduated from Franklin Pierce HS in 2008. The Tacoma News Tribune selected him to its All-State team as a defensive back. He also earned first team 3A All-State honors as a defensive back from WashingtonPreps.com. Selected to play in the 4A/3A East-West All-State Game. The TNT also picked him as first team All-Area quarterback and its co-Offensive MVP. The Seattle Post-Intelligencer also selected him to its All-Area team but was its Defensive MVP. Named by the Seattle Times as a "White Chip" selection as one of the top 100 prospects in the state of Washington. Was a first team All-South Puget Sound League 3A selection as a quarterback and defensive back, and was the league's Most Valuable Player on both sides of the ball. Including playoff games, he had 17 interceptions as a senior and eight as a junior. He completed 155-of-287 passes for 2,410 yards, 36 touchdowns and 10 interceptions in the regular season as a senior. He also rushed for 491 yards and four touchdowns. He led Franklin Pierce to a 12-0 record before losing to eventual champion Skyline 48-14 in the semifinals of the WIAA State 3A Playoffs. As a junior, Armstrong suffered a concussion and lost his job as quarterback at Franklin Pierce. His position coach at Franklin Pierce was former Washington State quarterback Jason Gesser. The head coach at Franklin Pierce, Howard Lutton, compares Armstrong's athletic ability to former Franklin Pierce and EWU standout Eric Kimble. Kimble was a two-time All-American and finished his career with a school-record 253 catches and a Big Sky Conference record of 4,140 yards. His 46 career touchdown catches were second in NCAA Football Championships Subdivision history behind the 50 of legendary Jerry Rice. Armstrong finished his high school career with four letters in baseball and three in basketball. As a senior he was All-State in baseball, earning first team honors as an outfielder by both the Washington State Baseball Coaches Association and the media. He also played in the All-State series after hitting .410 with eight home runs, 31 runs batted in and 10 stolen bases. As a pitcher he was 3-1 with a 3.03 earned run average and 24 strikeouts. He helped lead Franklin Pierce to the quarterfinals of the WIAA State 3A Playoffs for the second-straight year. He earned second team All-State accolades as a sophomore and junior in baseball, and also earned honorable mention All-State honors from the Seattle Post-Intelligencer as a center fielder as a junior.
Personal: Born 7/25/89. First name is pronounced "Eric." Is considering business administration as his major.