http://studioartportfolios.collegeboard.org/work/2015-student-1-2-d-design-breadth/
This shows an excellent Breadth portion of a 2d design portfolio.
http://studioartportfolios.collegeboard.org/category/2015-2d-concentration/
This shows a range of portfolios exploring different concentrations.
http://studioartportfolios.collegeboard.org/category/2015-2d-quality/
This shows two examples of the quality portion of the AP Portfolio.