I can certainly understand why you are without an attorney, as his continued back-and-forth probably cost you a great deal in legal fees. Before giving in to this, consider contacting attorneys who can offer you a reasonable payment plan, so that you can afford to be represented. His past behavior might rise to the level of abuse of the system, and entitle you to an award of legal fees.
Additionally, you should ask the court to order mediation, as a binding settlement agreement reached during mediation, would resolve the issues without going back to court.
In the meantime begin collecting school records for the children to demonstrate your objections, as well as names and addresses of potential witnesses. The more 'homework' you do yourself, the less you will have to pay to the lawyer. Good luck. TCAsk a similar question
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