The Polpithigana National School IT Club could be a student organization dedicated to all things related to information technology (IT). Its primary focus would be on promoting technology awareness, learning, and skill development among the students. Here are some common activities and functions an IT Club might engage in:

1. Workshops and Seminars: Organizing workshops, seminars, and presentations on various IT topics, including programming, web development, graphic design, cybersecurity, and more.

2. Coding Competitions: Hosting coding contests or hackathons to encourage students to enhance their programming skills and creativity.

3. Tech Talks: Inviting guest speakers from the IT industry to share their experiences and insights with the students.

4. IT Support: Assisting students and teachers with technical issues they might face with computers, software, or other IT-related problems.

5. Robotics and Electronics: Exploring the world of robotics and electronics through hands-on projects and demonstrations.

6. Web Development and Design: Creating and maintaining the school's website or other digital platforms.

7. App Development: Encouraging students to develop mobile applications for educational or community purposes.

8. IT Outreach: Collaborating with other schools or organizations to share knowledge and participate in IT-related events.

9. Cybersecurity Awareness: Raising awareness about online safety, privacy, and cybersecurity best practices.

10. IT Club Competitions: Participating in inter-school IT competitions and showcasing the club's skills and talents.

The exact activities and initiatives of the IT Club would depend on the interests and goals of its members and the resources available to the school. It could be a fantastic platform for students to learn, collaborate, and gain valuable experience in the field of information technology.