Interior paints have a scrubbability rating, established through standardized testing.
This is a good indication of a paint film's toughness and ability to withstand physical abuse. Though this rating may not be posted on the can, a paint retailer should have information on the rating. By comparing these, you can get a good idea of the paint's quality. One problem with using a flat paint on interior walls is that it can be washed, but it doesn't take kindly to scrubbing. 2001 by Don Vandervort.