In the last 10 years, St Michael's College has been producing professional rugby players by the bucketload.
But if they specialise in one type of player, it might be second row.
James Ryan is probably the most famous lock off the Michael's production line, while Ross Molony, Ryan Baird and Oisin Dowling are among their other exports in the second row alone in recent years.
No pressure on Conor O'Tighearnaigh so.
One of Richie Murphy's class of 2022, the second row has returned for a second year of U20 rugby, but this time as one of the team's leaders.
Twelve months ago he found himself thrust into the starting side as an 18-year-old when the squad was hit by injuries, and played almost every minute of the Grand Slam success, forming a brilliant partnership with fellow Leinster man Mark Morrissey.
And he's made a big impact already in this Six Nations, scoring a try in last week's 44-27 win against Wales in Colwyn Bay.
O'Tighearnaigh has taken on the responsibility of calling the lineouts this season, joined by his fellow UCD man Diarmuid Mangan in the second row.
"It's not massively different," he says of his role in this year's team.
"Last year you didn't have the same amount of responsibility to be a leader, or you could try look at the other lads and copy what they did, but this year you have to lead by example.
"I learned with the players last year who had played the year before, I learned a lot from them, and I'm trying my best to set an example for the younger lads. But it's each to themselves, you have to control what you're doing."
Already standing at a towering 6ft 7in, the 19-year-old reckons he's added "maybe seven kilos" to his frame in the last 12 months.
But after also featuring for Ireland in their summer series games against France, South Africa and England last year, as well as his work with Leinster's sub-academy, he believes he's made significant strides in his game since his U20 debut 12 months ago.
"The experience of the last 12 months, with the Six Nations and Summer Series, and the training we do in Leinster, physically as a player, you're bound to improve.
"I've hopefully come along a lot, and then the experiences of playing the games, playing the best teams in the world, France, South Africa, England, all of them, hopefully with the experiences and training I've had, I've come on a bit."
Rather than feeling burdened by the long list of locks who have progressed through his alma mater's gates in recent years, O'Tighearnaigh instead seems excited about what the future could hold.
In his spare time he goes back to St Michael's to help coach the first years, just as Ryan and Baird did for him.
"When I was in first or second year, James Ryan was my coach, so I would have had a whole year coaching with him. This was when he was maybe a year out of U20s.
"Then when I was in fourth year or so I had Ryan Baird as a coach. Looking up to them, it's a great example to see the players that went through the same system as you are, are making it to the top of their game, so it's proven results, and that the system works.
"It's an inspiration to look at when they come in, you're trying to impress them and get to where they are."
Ireland continue their title defence against France tomorrow night (live on RTÉ2 and RTÉ Player), with the visitors having survived a big scare away to Italy a week ago.
Richie Murphy's side produced a nailbiting 17-16 win away to Les Bleus a year ago, which gave them the early momentum from which they eventually won a Grand Slam.
And with Ireland now being the team to beat, O'Tighearnaigh says they have no issues dealing with the pressure.
"That's something that you want almost. It is what it is, it doesn't really make a difference on the pitch, but you want to be looking to be the best team. Every game, you want the teams to be best prepared, have the best games possible.
"It's a completely different team to last year, but if it's just because we won last year, that's something we have to embrace and use, to keep the momentum going, and that we know every team will be up for it when they're playing us."
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