Secondary school teacher Enoch Burke has attended Wilson's Hospital School in Co Westmeath today, the first day back after the Christmas break.
Mr Burke arrived at the school shortly before 8.45am this morning.
Mr Burke was jailed in early September after breaching an order granted to the school by the High Court, directing him to stay away from the school.
After spending 108 days in prison, he walked free from Mountjoy prison before Christmas after his release was ordered by the High Court.
Mr Justice Brian O'Moore said the only threat to Mr Burke's continued freedom would be if he again breached a High Court order.
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Mr Burke has been suspended on full pay by the school as part of a disciplinary process, following a row over a request from a student to be addressed by a new name and for "they/them" pronouns to be used.
The court granted the injunctions after Mr Burke continued to attend the school following his suspension.
It is understood a number of parents contacted the principal about Mr Burke's attendance at the school today.
Mr Burke left the school at 3.50pm this afternoon.
He was driven from the school by his father.
