* The year of appointment: Pay scales are revised periodically by the government. Someone appointed recently will have a different salary than someone appointed several years ago.
* Specific subject taught: There might be slight variations depending on the subject. However, the differences are usually minimal.
* Experience: While the starting salary is based on the pay band, increments are added based on years of service.
To find the *most current* pay scale, you need to refer to the official notifications and orders released by the West Bengal School Service Commission (SSC) or the relevant government department. Searching their website is the best approach. Looking for "Revised Pay Scale for Assistant Teachers, West Bengal" or similar keywords will likely yield the information you seek. You may also find relevant information on education-related websites and forums in West Bengal.
Keep in mind that any information found outside of official government sources might be outdated or inaccurate.