well, what you are saying is screaming ND to me.
there are basically two ways to get the education he needs.
1 pay a fuckload of money for private school
2 work within the system and fight for it.
you say you don’t have money so option 2 is pretty much your only choice.
so basically the way the education system is set up is that the default is that a child starts in mainstream. Mainstream has requirements which most children can meet and for most children it meets their needs.
then if mainstream is not working there can be additional resources applied. Think of this as extra help.
the process of getting extra help requires a lot of documentation. You need to basically show that your child is not coping in mainstream and also that them not coping is causing problems in the school.
basically if your child will sit still and do as they are told you’ve got very little chance of getting extra support.
so the evidence for extra support tends to be stuff like incident reports if the child has been violent towards teachers or other students, reports of behaviour from advisory services who come and observe - wandering out if the classroom and failing to engage would come under this category. External evidence like diagnoses, autism assessments, speech and language assessments and ongoing therapy (physical/speech/social skills type stuff) also counts.
it sounds like the school have been using an existing class/other child’s TA to support your child in the hope that your child would improve.
while this is common practice, it’s not great or strictly legal and if the other parents find out and kick up a fuss then your child will be left completely unsupported.
what, if any documentation do you have showing that your child has Sn?
the problem is that if you do not have any, then they start running through the disciplinary processes.
In reception this is usually stuff like having pegs and a sun and a rain cloud. in year 1 the teacher (and class TA if you are lucky enough to have one) will be redirecting your child almost constantly.
it’s a good idea to start working with the school here. You are going to need their documentation and their evidence if you want support for your child.