For the general topic, here is an example of one Delta collegiate chapter's policy on transfers:
1. Transferring membership from another chapter is immediate upon payment of local dues and submission of an official verification of payment of Grand Chapter dues.
2. Transfers must show verification and maintain a minimum 2.5 GPA.
This is why people need to contact NHQ/IHQ and schools/chapters rather than asking Greekchat for everything.
