Assertion: grade school's grade | /r/CapableOf | rise at a rate of 0.15 per decade
Facets:
value: since the 1960s
type: TEMPORAL
value: on a 4.0 scale
type: OTHER
Source sentences:
text: An evaluation of grading practices in US colleges and universities written in 2003, shows that since the 1960s, grades in the US have risen at a rate of 0.15 per decade on a 4.0 scale.