Hi new member here and could really do with some sound advice regarding my year 1's spelling list and phonics sounds. Spelling lists sent home weekly that focus on RWI sounds (or not). My DC is a strong reader and does well at school, however the spelling lists are hard to learn and starting to drive me bonkers. I'm struggling to understand the benefit of giving 5/6 year olds such lists. Can anyone shed any light on this and advise if the below is ok for this age range and makes sense re phonics. TIA 
Sounds oi & oy
Disappointed
annoying
would
voice
checkpoints
choices
joyfullness
couldn't
avoiding
marmalade