Do You Take Into Account The Ability Level of the Kids When Scoring a Task?

We were debating this in our AIW scoring session the other day and decided we'd like to get an answer on the following question from the experts.  Our question is, do you take into account the ability level of the kids when scoring a task?  For instance, I teach high school math, and in our school, we have two levels for freshmen when they enter high school.  The traditional Algebra class, and then a class called Algebra A.  Algebra A consists of kids that are lower in ability and thus we teach them Algebra at a slower pace over a two year period.  Many of these kids are reading at a 5th or 6th grade level and their math ability tests out about the same.  We were scoring a task the other day that linked linear equations to a real world situation with hot air balloons where the change in temperature is directly effected by how far off the ground the hot air balloon gets.  There was quite a bit of reading involved and then kids had to pick out the math out of the reading to answer a series of question pertaining to a situation that actually happened.  Would you look at scoring this task differently in Algebra A than in Algebra 1 considering the level of the student doing the task?  Thanks in advance for your help.