So Lawrence Hall of Science conducted a survey of Bay Area School Districts to check in on the state of science education at the elementary school level.
The findings: 80% of K-5 teachers reported spending one hour or less each week on science.
Link to the study.
Link to SF Chronicle article.
Link to the YouTube video (which is an executive summary given by adorable moppets... who, while surrounded by "science-y" gadgets (pretty much NONE of which you'd see in any elementary school classroom whether it was science intensive or not), almost but don't quite match the actual demographics of elementary schoolchildren in the nine Bay Area counties.)