This question was in the Getting There section in the PI (which answers traffic questions). It has relevance to the district's move to Metro for all high schoolers (and perhaps, eventually, middle school). The part of the answer that is telling (the question is about crosswalks at Ingraham High School):
"Della, separately responding to Collier, said current city policy is for painting crosswalks around elementary schools and not near middle schools or high schools. Hirakawa says this is based on middle and high school students' better understanding of traffic dangers. Della said he'll ask about the pros and cons of adding middle and high schools and work on the issue with the council's Special Committee on Pedestrian Safety."
Well, the kids may be older and understand the dangers but I wouldn't say that makes them less likely to take chances. Dropoing an e-mail to members of the City Council on this issue might be a good idea. If the district wants this policy, then the district and city should be urged to make it as safe as possible.