Currently have a site written in codeigniter but I'm not dependent on this framework (open to discussion in any language that performs the necessary actions). Originally written by a programmer in less than two weeks but is currently 'working' but incomplete for what I need. The program delivers an online university chemistry course consisting of several hundred 4-6 minute videos interspersed with mastery quizzes that must be passed before continuing on. Database is MySQL. Additional (more detailed) information provided. Overall, the program is very straight forward and linear...next version of the development will involve some vertical integration based on simple dichotomies and student performance levels.