Create A Website With Program Developer?

My home page contains three Dropdownlist controls, the lists are populated from my database i created ie. (From three tables)- Courses, Grades and Schools.

I want a situation whereby a user clicks on any of the Courses, or the Grades, or any of the Schools from my dropdownlist controls, and selects the search button, the names of the students that took the course, their grades in that course, and their schools should appear in a table form. if its a Grade that is selected, the names of the students with the grade, their courses and their schools should also appear in a table form. And likewise the School.