I feel for the OP, I really do because my son has the SAME schedule except he goes M & W and every other Friday. I hate it!!!!!!!!
I do feel he is being cheated out of some education.
They can not do all day, every day K because of classroom size. There are currently 7 K teachers and about 240 Kindergarteners in my son's school.
Half-days are out because of bus funding, so the all day, every other day is what they say works right now.
I know a lot of parents hate it. I know I do. I feel my son isn't being challenged enough and K is really just a preschool in disguise.
They are talking about building a new school and the 1st graders would go in the same building with the 2nd-5th graders. Right now my son's school only houses K & 1st graders. If they build a new school (got to pass first, that is a BIG step) then the current K & 1st school would house only K's and it would be an all day every day program once they hire more K teachers.
Of course none of that would affect my son's K year, so since I can't change it I do work with him at home on his off days.
We don't sit down all day and work but we will read books together and work on letter sounds and work on some math problems. Sometimes we will just play board games like Sorry! or Uno where he has to following directions and work with numbers.
The way I see it is my son mainly goes to school for art, music, gym and computer class. Classroom time they are working on writing letters, which my son learned all that in preschool. At home I am teaching him how to read, which he is picking up pretty good.
Not the ideal K year I want for my son but I am trying to make the best of it.
GOOD LUCK OP!!! I know how you feel