We didn't get Science acceleration until Middle School. It was only when my DS's math levels accelerated so far that the Science would never catch up. They agreed to allow him to test out of courses using course exit exams. Of course, they didn't think he would pass and had to scramble around to figure out the scheduling once he did. We have a school fairly open to certain advancements in Language Arts and Math. Apparently, my ds is the first child they have every allowed to accelerate in Science.
Many schools argue the math will fall behind the science curriculum therefore no acceleration.
My ds has a library size collection of science books, microscopes, telescopes, robotics, you name it things around the house. We let him go crazy at home. The school was not going to even entertain it.
