Originally Posted by Minx
His first-grade teacher (Montessori where he was working at a third grade level) last year recommended he be bumped to third grade... The second-grade teacher has tried by getting materials from the fourth-grade teacher for him to use but he is miserable and has asked to move to fifth grade.
Sounds promising, especially since your son requested it and a previous teacher suggested and it hopefully may back it with a letter of recommendation, or may offer to help complete the IAS?

Quote
The psychologist who tested him also thinks it would be good for him though she does not anticipate the school agreeing to it. Neither do I, to be frank, but I'd like to give it the best possible shot.
Best possible shot is often the Iowa Acceleration Scale, you've probably seen this.