Create Score Analysis Reporting - repost

I want students to be able to enter their answers from a multiple choice test into my website, and then receive a score report. The exams are the SAT and ACT. Other websites like this exist, like [login to view URL] and [login to view URL] I want something very similar. I would give each question a categorization and the report would say how well students did on each type of question. Right now I have to pay about $5 for each test report, so if I could make this software for less than $500 it would be worth it for me right now. A file is attached with an example of a score report.