The hosts opened the scoring against the run of play just after the half-hour mark, but Blues struck back twice before the break to take the lead.
They then added two further goals in the second half to put the match beyond the Sky Blues.
Academy coach Steve Spooner was happy with the way his side went about the game and particularly with their finishing.
“It was a very pleasing performance,” said Spooner. “We showed a good attitude, were competitive in midfield, won second balls and were ruthless in front of goal
“We’d played well in previous weeks but lacked a bit of a cutting edge, so that was something we worked on in training in the week leading up to the game. From a coaching view it really paid off.
“Up to half time we'd had 13 shots and an old manager of mine one said ‘if you have 20 shots you should win the game’.
“Having said that, we went a goal down when we conceded against the run of play. But we were soon back in it when Kyle McFarlane scored an excellent equaliser from 25 yards out and then Liam Truslove (pictured) put us in front with a tap-in.
“We carried on the good work in the second half and scored two more goals to claim a deserved win.”
Blues U18s: Callum Preston, Dominic Bernard, Bobby Moseley, Reece Brown, jean Kalenda, Callum Thomson, Charlee Adams, Liam Truslove, Deqwon Ebanks, Kyle McFarlane, Viv Solomon.