To determine the correct statements about the Global Alliance of National Human Rights Institutions (GANHRI), let's analyze each statement:

• Statement 1: It works in accordance with UN Paris Principle. 
  The GANHRI is responsible for overseeing the accreditation of national human rights institutions based on their compliance with the principles laid out in the United Nations' Paris Principles. These principles define the standards for national human rights institutions, focusing on aspects like independence, mandate, and powers. Therefore, statement 1 is correct.
• Statement 2: Fully compliant and partially compliant members are accredited as 'A' and 'B' respectively. 
  The accreditation process under GANHRI categorizes institutions based on their compliance with the Paris Principles. 'A' status is granted to institutions fully compliant with these principles, while 'B' status is given to those partially compliant. Therefore, statement 2 is correct.
• Statement 3: National Human Rights Commission (NHRC), India has been accredited/classified under 'A' in the year 2025. 
  As of the data available up to October 2023, there is no information confirming that the NHRC of India has been classified under 'A' status in 2025. Statements about future events or classifications should be taken cautiously unless officially announced. Thus, statement 3 is incorrect based on current knowledge.

Based on our analysis, the correct statements are 1 and 2. Therefore, the answer is:

1 and 2 only