No way for us to tell point impact for any change. It's not just about the change itself but one's credit profile and how the change factors in. These tend to be significant factors though.
Would this take you to 0 derogs on your reports? If not, you won't see as big of a gain if you have any lates/collections remaining versus getting all of them removed. Make sure you do whatever it takes to avoid these in future. Payment History is the biggest factor and it must be 100% positive without any lates, collections, etc.
http://www.myfico.com/crediteducation/whatsinyourscore.aspx
