Web Scraping for Education Data

I spent some time today and yesterday doing some data wrangling. I wondered where AP Calculus AB is offered throughout the state of Minnesota. I first went to the College Board site and found this database. There were 9 pages of results that I downloaded and then used readLines and regex to extract the zip codes for each school. There were 164 schools and only 142 unique zip codes. I used the maptools package to create the map and colored it based on the data.