Students must normally be seventeen years of age by 15 January following entry: i.e. for entry in 2024, date of birth must be on or before 15 January 2008. There is no upper limit.
If you will not be old enough and wish to appeal this, you can appeal to the Registrar. Your appeal should be accompanied by a letter of support from your School Principal. You can submit this via www.ucd.ie/askus