Plc courses Galway city

My daughter isn’t sure if she will get the points for college this year after doing her leaving cert. So she’s putting down her name for a plc course. I’m not sure which school, I presume it’s the one on fr griffin road. I see they are taking applications from tomorrow onwards. Does everyone who applies for a course get one? Is Fr griffin school the best one? Sorry for silly question I don’t know much about these courses