NFHS Learning Center: http://nfhslearn.com/courses/38000
Concussion Fact Sheet for Athletes: http://www.cdc.gov/headsup/pdfs/custom/headsupconcussion_fact_sheet_for_athletes.pdf
Parent & Athlete Concussion Information Sheet: http://www.cdc.gov/headsup/pdfs/custom/headsupconcussion_parent_athlete_info.pdf