Last year researchers from the University of Hampshire concluded that:
“Parental effort is consistently associated with higher levels of achievement, and the magnitude of the effect of parental effort is substantial. We found that schools would need to increase per-pupil spending by more than $1,000 in order to achieve the same results that are gained with parental involvement.”
You can read the press release about the study here, and you can read the actual study, Parental Effort, School Resources, and Student Achievement.
I have to admit that I’m a bit wary about quantifying parent involvment/engagement in those terms, even though the results certainly support my perspective.
I’d be interested in hearing from others who are more experienced with this kind of research — does the methodology of this study look good?