 School athletic staff are advised by experts to search for NOCSAE certification stickers, both as part of their athletic training education and day-to-day activities .They are warned to do this, in particular, for liability reasons, as "serious legal reprecussions may occur if a helmet is issued to a student athletic " lacking an approval sticker.NOCSAE reports that by 1985, the number of head injury fatalities had fallen significantly, with zero deaths in 1990, the first season with no deaths since reporting began in 1931.