"...strong students tend to increase peers’ academic performance and weak students tend to reduce it." (Winston & Zimmerman, 2003)
http://www.williams.edu/wpehe/DPs/DP-64.pdf (page 24)
I'm sure you could mind much more through Business Source Premier and ProQuest if you wished.
I don't actually have time to read the whole article, but from my 30 second glance, it seems as though it's dealing with the motivation of students to achieve high scores/attain entrance to good universities.
Here are my questions (which, you know, could possibly be deduced fromm the article, but seeing as I should be doing homework...):
+Are the schools surveyed schools with exceptionally large percentages of students who perform farrrr above the average?
+Is motivation to attend tertiary institutions inherently linked with motivation to master coursework that doesn't affect SAT/GPA/ENTER results?
+Is the motivation of the higher performing students ever altered by the lower performing students?
+Do the teachers in such institutions target the coursework at highly able students, or are classes aimed at those who sit just above the national average?
+Are opportunities at high performing schools consistently given to a similar group of students (hence blocking lower performing students from gaining a broader education)?