[plt-scheme] Re: [plt-edu] Should computer programming be mandatory

>From the comments here it isn't clear
how the two groups of students:

   those who only took English
   those who took "English plus Latin"

were formed. If it was a matter of
self selection, the students who
choose to take Latin could be
very different from the students
who do not make the choice.
That difference might be the
reason for the better scores,
not the activity of learning Latin.

This is a very old point. If I missed
it here, I apologize for the repetition.

Roger Purves