Read content from Image File

Please, am trying to automate a GPA calculation system for a web app developed with Laravel. I don't want the student to manually all enter their courses and their respective grades. I want them to upload the softcopy of the results in image format or pdf. Then, the app will read all the courses from the uploaded file and populate accordingly and calculate the GPA. Please, any idea on how to get this done. I really do appreciate your contribution and professional advice. Thank you.