Don't despair Travnet (Are you only a Travnetsite on weekends??
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Funnily I also have leaving cert, but since living in the uk I've learnt not to differentiate. They never even think that there is anything but A levels, so I just tell them that I have A levels. (I'm privately convinced that leaving cert is not the equivilent, but of a much higher standard
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If they get picky I explain. If they're happy, then I don't. It hasn't been a problem so far.
In your answers, just be honest, tell them what you can and don't worry.
Just remember that you're not fighting for a job, you're fighting for them to let you pay them money to train you, and to be considered for a job. Massive difference.
Slán agus sláinte.