The developers at the Collaborative Study have put together a series of nine essays covering various time periods in American history. Once a user has completed an essay, an online essay grader will analyze and score the submitted text, giving the user the option to make revisions.
In addition to the automatic essay grader, the developers at the Collaborative Study have also provided a collection of multiple choice "mini-exams" for test preparation purposes. The site will automatically grade your "mini-exam" once you've completed and submitted your answers.