MySchoolIndia.com Website Design & Development -- 2

I've website https://MySchoolIndia.com Kindly go thru the website https://MySchoolIndia.com thoroughly before doing any bidding for work to understand what it is meant for primarily. 1. I'm looking to revamp the design & re-develop website to make it more appealing to users of age group 6 to 17. 2. Currently its completely free. After promotion period, I'm looking to change it to subscription based for student users to monetize using PHP, MySQL technologies as I've Linux hosting. 3. Currently it has different HTML landing pages for users coming from PC/Laptops & mobile devices. I want to see possibility of integrating it into a single landing page with responsive design to avoid duplication error by search engines to improve SEO of https://MySchoolIndia.com