To join the Babur Char High School Alumni Association, please follow these steps:

1. **Visit the Website**: Go to the official website of the Babur Char High School Alumni Association. You can access it at [https://bchsaa.org/](https://bchsaa.org/).

2. **Sign Up**: Look for a sign-up or registration option on the website. Typically, there will be a registration form where you can provide your personal details such as name, email address, graduation year, contact information, etc.

3. **Submit Necessary Documents**: Some alumni associations may require additional documents for verification or approval purposes. Ensure you provide any requested documents along with your registration.

4. **Await Approval**: After submitting your registration and any required documents, wait for the association to process your request. This may take some time depending on the association's procedures.

5. **Confirmation**: Once your registration is approved, you'll likely receive a confirmation email or notification welcoming you as a member of the Babur Char High School Alumni Association.

6. **Engage**: Start engaging with the alumni community! Participate in events, discussions, and activities organized by the association. Connect with fellow alumni, share memories, and contribute to the growth and development of the association.

If you have any specific questions or need assistance with the registration process, you can reach out to the Babur Char High School Alumni Association through their contact information provided on their website or any other available channels.