Although there wasn't an extreme decline in scoring, the average game in the following year had 5.9 goals. (sportsinsights.com)
There are more declines in scores than statistically significant gains in that first chart - some states more lost than others, but a lost decade nationally. (jaypgreene.com)
This is the first recorded decline in scores since the assessment started being administered in 1990. (coreeducationllc.com)