Hi Q, Greetings! We are well experienced in Wordpress custom plugin development. I have read the requirement details of your quizzes WP plugin and as well as reviewed the 10 quizzes URLs. I need to discuss in details regarding the functions and the calculation method of the following 10 quizzes. Feel free to ask me if you have any query. Yours Sincerely, Arpan Das, Sr. PHP Developer and Business Head. P.S. We shall deliver you 100% satisfactory solution.