Enoch Burke has arrived outside Wilson's Hospital School in Co Westmeath for a second day in a row, where he was prevented from entering the school grounds by a security guard.
Mr Burke told reporters: "I turn up for work and this is what happens. I am obstructed at the gate."
The school has brought new proceedings to have him arrested and jailed for breaching court orders by trespassing at the school.
Mr Burke was released from Mountjoy Prison on Wednesday afternoon.
He had been jailed in November for contempt of court.
Mr Justice Brian Cregan released Mr Burke to allow him to prepare for a legal challenge he is taking against a Disciplinary Appeals Panel hearing his appeal against his dismissal from the school.
Yesterday, barrister Rosemary Mallon told the High Court that less than 24 hours after being released from prison, Mr Burke had returned and trespassed on the school grounds.
Mr Justice Cregan gave the school permission to serve notice of the attachment and committal proceedings on Mr Burke by email.
He said he expected to see Ms Mallon and Mr Burke back in court at 2pm today.
Mr Burke refused to say if he would attend the court and accused Judge Cregan of "playing around" with the law.
He said: "This is where I am, this is where I should be," he said as he stood at the school gate.
He arrived at the school around 9am as parents and children were arriving for the day.
One parent, on his way out of the school, rolled down his window and said "Enoch Burke is not a teacher here, he should not be here," before driving off.
