It would be interesting to look at ‘opportunity to learn’ metrics at each TSCN site,
** Opportunity to Learn and Equity:Measuring Effort in STEM http://vtroundtable.org/filemanager/download/55095/
** Secondary school physics availability in an urban setting: Issues related to academic achievement and course offerings http://dx.doi.org/10.1119/1.3191690
** Inequities in Physics Access and Enrollment in Urban High Schools http://dx.doi.org/10.1063/1.3021265
** The Effects of Opportunity to Learn, Family Socioeconomic Status, and Friends on the Rural Math Achievement Gap in High School http://bit.ly/YpDtZy
and the extent to which the YLTs make decisions to close their self-perceived opportunity and cognitive gaps. I think such a paper will be illuminating both in terms of putting a light on the opportunity gaps, and also on how the students themselves would close those gaps with the freedom and resources of TSCN.