The Posh under 18s were beaten 3-1 by Luton Town in their latest fixture.
The Peterborough United under 18s slipped to a 3-1 home defeat to Luton Town at the Mick George Training Academy in their latest Youth Alliance League fixture.
Morgan Penfold scored the goal of the game with a cracking finish from the edge of the box after good work from Leonardo Da Silva Lopes.
Scarff said: 'We started much better than we had done in the previous fixture, but I was frustated with the way that we conceded the first goal in the game. We should have dealt with it better. We found ourselves 1-0 down against historically one of the strongest teams in our league, but to be fair to the boys, they worked hard to get back into the match.
'We equalised with an outstanding goal from Morgan Penfold. It was a good move, an excellent pass from Da Silva Lopes and Morgan struck it into the top corner from the edge of the box. At 1-1, we created a few chances, but the five minutes before the half-time interval is a spell that the lads will learn from.
'We allowed the game to become stretched, consequently, we gave away a very dubious free-kick away on the edge of the box, which they scored directly from. We found ourselves behind at the break, we spoke about the positives and in the second half, I have to say I was reasonably happy with the performance they put in.
'Luton had a decent start and Conor Barton made a couple of decent stops, but we established some control and created chances ourselves. I don't want to moan about referees, but the decision to give a penalty for Luton was very dubious. We could have dealt with it better defensively though and we have to take responsibility.
'They scored the penaty and although we continued to play well, we couldn't get anything from the game. Despite the defeat, the pleasing thing for me was the progress the lads showed, both in training and in the gane. There were some strong individual performances that we didn't have in the week before. From a development point of view, myself and Ryan Semple are a lot happier with them than the week before,' Scarff said.
Posh: Barton, Robinson, Goode, Connor, Humphrey, Keating, Hood, Lee, Da Silva Lopes, Penfold, Moore. Subs: Stump, Gale, Alban-Jones, Forde, Jarvis.