I had a 1 employer resume, and listed each of my 2 positions with that employer separately so I could talk about each separately. My layout and approximate % of space on the page was:
Header (contact info)-5%
Education-10% (listed basic info: degree, majors, GPA, scholarships & honors)
Work experience-50% (brief overview of responsibilities for each role, with more space devoted to accomplishments)
Extracurriculars-35% (overview of involvement & detailed accompishments)
Even though I agree since it's a academic resume the education section should come before w/e, I wanted to highlight my w/e and extracurriculars more than education in my resume, both because I graduated from undergrad 8 years ago and also because with transcripts and other academic info elsewhere in the application, I didn't want to devote valuable real estate here to duplicative info.