Well, I think it depends on whether your DS can handle not accelerating - DS12 was okay waiting until 2nd grade before his first acceleration. The flip issue is whether your DS has the requisite writing and EF skills to accelerate to a higher classroom, assuming that is required at your school as it was at ours. I always endorse giving the teacher a chance to make her own conclusions about your DS because having supportive teachers and adminstrators made advocacy much easier in DS' case during both accelerations.
