No listed deadline to accept or reject offer?

[kiki123]

I have recently received an acceptance letter from a school that I am very interested in attending. However, I am still waiting to hear back from other schools that I've applied to to make my final decision. In my letter of acceptance, there is no mention of by when I must accept or decline my offer, which leaves me perplexed. Is there a common deadline to abide by or should I contact admissions and ask? 

[MadScience]

The general rule is April 15th. I believe (please someone correct me if I'm wrong) that all schools are required to abide by this deadline, at least in the US.

[Sconnie]

They required to abide by it but rather have an understanding that April 15th is the standard.

[Phdoobiedoobiedoo]

This is the agreement made with the Council of Graduate Students, and the schools that signed it, as pertaining to a funded offer:

 

http://www.cgsnet.org/ckfinder/userfiles/files/CGS_Resolution.pdf

[tarrman]

Note that the April 15th date is the EARLIEST deadline to accept. Some schools set it later (for example, Michigan EE has a deadline to accept of May 1st, but they signed the CGS resolution).

[kiki123]

Thanks for the information, everyone. I feel much better knowing that there is a standard deadline.