John Pemberton's youngsters secured a second successive league victory, an impressive second half display securing the points at neighbours Barnsley.
However, the Academy boss believes there is more work to do after a sloppy first half display.
Pemberton said: "Barnsley were the better side in the first half but fortunately we managed to keep them out. We gave them too much space and when we won the ball we were not as fluid as we would have liked to be.
"In the second half, we passed better and in the end we were worthy winners, which will hopefully build more confidence.
"As we have said previously, winning is not the be all and end all at this level, our aim is development. We know have an under 21s team and a lot of my team will, no doubt, get moved up to play at that level, which means we will have to blood younger players.
"Over the course of the season one of the major aims is to get as many players as much game time as possible."
At Barnsley, the goalscoring began in the 55th minute when JOSH WILLIAMS netted with a header from a free-kick.
Namesake TYLER WILLIAMS added the second after 69 minutes. He benefitted from a neat piece of play involving Pemberton and Smith before slotting him first time.
The scoring on was complete on 84 minutes, courtesy of a mistake by the home team. A high pass-back saw the Barnsley goalkeeper attempt to head clear but he could only find SMITH, who finished competently.
Blades: Willis, Hodder, Salt, J. Williams, T. Williams (Eyre 85), Khan, Pemberton, Whiteman (Dimaio 70), Heather, DeGirolamo (Ptak 70), Smith.
Unused: Lynch, Scarisbrick.