Hello Jakub,
I have reviewed your requirements in detail and also viewed the attached file.
Please note that we developed a somewhat similar application for an online classes where the admin wanted students to upload certain documents and when every thing is received, admin will enable access so the student can review the online class. After the class is completed, students were to answer few questions.
Having experience of such an application, we can provide a good application to you. We will also provide option for admin to upload document on behalf of students from back end
We can develop this in PHP with MySQL as the database.
We can start immediately on the task upon receipt of confirmation and advance payment. Our payment terms are as under:
- 30% advance to start
- 50% when the project is successfully completed and tested on our server
- 20% after making the project live on your server
Please feel free to write for any other details you may require.
Regards
Paresh