What is the Due Date for Retaking Tests?
There's no deadline.  Students have all through the semester to retake tests.  They do have to done by the time the semester ends, of course, in order for the grade to count.  Also, it's probably not a good idea to wait 2 or 3 months before retaking a test, but I will leave the planning up to the students and parents to see what fits best into their schedules.  
NOTE: Students may not retake tests without doing the corrections assignment.  They should keep the original test and the corrections assignment to use to help study for the retake, but must then turn them in.  If they lose the original test, they should come and talk to me.