As an experienced web developer at RoundWeb Infotech, I am confident in my ability to create the three education websites you require for online booking of classes and calendar integration. My skill set encompasses both front-end and back-end development - HTML, CSS, JavaScript, Bootstrap, React.js, PHP (Laravel, CI), Python - all crucial tools to ensure full compatibility across mobile and desktop.
Moreover, given the nature of your project, I can leverage my prior experience in integrating third-party APIs - a valuable skill when it comes to calendar integration as well as any future functionality enhancements you may need. My adeptness with databases such as MySQL and MongoDB would ensure seamless data management in these heavy-traffic websites.
Additionally, I understand digital transformation carries a significant weight in today's businesses. Hence, my previous work on UI/UX design and mobile app development will enable me to build these websites that align with your brand guidelines while providing necessary responsive design for cross-device users' convenience. Lastly, you can expect committed project management skills aiming at timely delivery without compromising quality. Let's collaborate and bring your vision of effective online education to fruition!