Ds age 7 moved to new primary in October due to house move. Due to covid hasn't had much the to make new friends yet. Was initially sat next to child A. Child A apparently kept trying to hurt DS ( nipping) kicking when teacher wasn't looking etc). I spoke to the teacher who moved DS to sit with child B. Apparently child B calls DS names and accuses him of eg stealing the Lego ( untrue). Spoke to teacher again who said will sit DS next to someone else "but we can't keep moving your child!". Wanted to say "well deal with the problem then!" But didn't want to cause a scene. I've also asked if they could maybe help DS with resilience ( have spoken to DS and done social stories at home re this ) this was met with " Yes, We've already done resilience with the class!". Any advice on how to make DS situation better?