I want to apply early to some schools, and their application deadlines are October 15th. I am also planning to take subject tests on october 6th. The scores would come back after the application deadline. Can I still take these tests and submit them to the colleges after the application deadline?
Call the colleges and ask. Some will be more lenient than others.
There is no blanket answer to your question. What does the college list as the latest date that tests can be taken? If the website does not specify, ask the college.