Despite some committed defence, Saracens opened the scoring with a try under the posts after Gloucester had failed to clear their lines to make it 0-7.
Gloucester responded with some good pressure resulting in a penalty chance for fly half Tiff Eden, who promptly converted to make it 3 - 7.
Saracens continued to dominate possession, but the Gloucester defence was more than a match for them in the first half, with the back row of Will Safe, Sam Underhill and Callum Wyman producing excellent defensive performances.
Eden added another 3 points and Saracens another 2 penalties before the break to make the half time score 6 - 13.
In the second half, playing against a strong wind Gloucester played as they had planned to.
They retained possession, played through the phases and created opportunities to score. However Saracens scramble defence was excellent and they managed to keep the hosts from crossing the line.
A number of the young Gloucester side made a case for their inclusion in the team that will play Canada U17s at Kingsholm on Monday 2nd April, with England U16 prop Will Goodrick-Clark standing out for his ball carrying.
England U16 Number 8 Sam Underhill also caught the eye with some exceptional defence and Hartpury College student Lewis Ludlow had an excellent all round game.
With time running out Saracens produced one final strike move which split the Gloucester defence to again score near the posts, making the final score line 6 - 20.
The Gloucester Academy U17 have now, having played Northampton and Saracens, taken on two of the best teams in the country in recent weeks and have shown real improvement in both games.
With their final outing of the year at Kingsholm on 2nd April, all of the squad are keen to play and to finish the Academy season with a win.
Billy Clark, Junior Academy Manager, said
"We're reasonably pleased with the game today. The final score perhaps doesn't reflect how close the game was and how hard our guys worked.
"But when you are playing teams like Saracens, who play lots of fixtures together, you expect them to come and test you in every area of the game - and that's exactly what they did.
"We responded well to some of those tests and our scrummage and our defence in terms of spacing, line speed and one on one tackles improved beyond measure from our last outing against Northampton.
"However other areas were brought into sharp focus and the guys need to learn from this experience, which is, at the end of the day, the purpose of the game."