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The run of matches was completed when they took on Holland in a friendly at the Amsterdam ArenA on Saturday night in a well deserved 1-0 victory.
Kerr had been hoping to have as many of his senior players as possible at his disposal in order to help preparations for the forthcoming World Cup qualifying campaign, but injuries and club commitments deprived him of 15 players.
Indeed, his initial squad of 26 has since been whittled down to just 20 available for duty.
However, several fringe players have been given a chance to stake their claim for the future and Kerr believes there are positives to take away from this end-of-season get-together.
"I have learnt a lot and some of it has been very positive," said Kerr. "In terms of the goalkeepers we have used three different ones (Shay Given, Nicky Colgan and Paddy Kenny) and they have done fine, so that has addressed what has been seen as a problem since Dean Kiely retired."
"In the back four we've used Alan Maybury who has got a lot of experience he hasn't got in the past. Gary Doherty and Andy O'Brien have played together as a pairing now, while Steve Finnan has more international football under his belt than he's had for a long while."
"In the middle of the pitch people were writing off Mark Kinsella in October but he has played in three of the last four games and played well in two of them - he didn't do so well against Nigeria."
"Then we have the younger players who have played who wouldn't have got the chance otherwise. We have used 24 out of 26 players over three games and that isn't bad."
"Maybe the negative is that we haven't had the strength in depth I would have hoped for when we took on the series of games, but we have done okay. We have one more tough game to go and then we can all have a break until we play Bulgaria in the friendly in August."
Kerr admitted that facing Holland with a depleted squad represented one of his toughest challenges since taking charge of the national team at the beginning of last year, but said he saw it as a "great challenge" rather than something to be afraid of.
"I would like to have had a more senior squad there but we had no control over the withdrawal of players through injury," said Kerr.
"Nonetheless it was a big match for us and a great occasion, playing in a great stadium, on a beautiful pitch and playing against undoubtedly one of the best teams in the world with great tradition and fantastic players. Our players, including fringe players like young Barrett and Alan Quinn did amazing against opposition of world quality."
"It was a huge benefit to us and we gave it all we could and the main plus was we put on the best performance we could get a win. We always respect our opposition and there was a sense of a great challenge in this match, especially when you consider the opposition."
"I wouldn't say we had any fear, rather it was a great challenge for the team and the staff - one of the biggest we have faced given the youth and inexperience we have in the squad. I think upcoming games will be very competitive but we'll be approaching it in the right way. The mix of youth and experience there in the squad really helps."