So should i go to the principal with this issue? I cannot attend the next PTA meeting.
You need to speak to someone who can give you the answers and make the changes. PTA wouldn't be able to do that. You can address your concerns, but it is so political, by the time you get anywhere the school year will be over.
Start with the principal and move your way up the chain in the district. They need to account for the cost of tuition with child/teacher ratio. What alternative solutions do you have to bring to the table? What other choices do you have if they don't change anything? Can you get other parents to petition?