Scotland beat Argentina 29-6 in the final group game leaving the U20 side eighth in the overall seedings.
It means that they are now grouped together with Australia, Ireland and Wales in the fifth to eighth play-off pool, and will play one of either Ireland or Wales, depending on results in their last tie of the Championship.
Head coach Sean Lineen said: “We’ve named a fairly settled side for what will be a very tough tie against a good Australia team. We were delighted with the result and display against Argentina, and it has set the benchmark for our final two ties.
“Although we are guaranteed our highest ever finish in the competition, we don’t want to settle for eighth, and want to keep challenging and climb up the competition standings.
Prop Dan Elkington and hooker Ross Graham, making his first start of the campaign, come in to the starting XV replacing Murray McCallum and Sam James. Andrew Davidson comes off the bench to partner Scott Cummings in the second-row.
Captain Jamie Ritchie returns to the starting side at openside flanker, with Lewis Wynne moving to the blindside.
Scotland U20
15 Blair Kinghorn (Edinburgh Rugby)
14 Robbie Nairn (Harelquins)
13 Alec Coombes (London Scottish)
12 Patrick Kelly (Le Parc)
11 Richard Galloway (University of Birmingham)
10 Rory Hutchinson (Northampton Saints)
9 Ben Vellacott (Gloucester/Hartpury College)
1 Dan Elkington (Watsonians)
2 Ross Graham (Hawick)
3 Zander Fagerson (Glasgow Warriors)
4 Scott Cummings (Glasgow Warriors/Glasgow Hawks)
5 Andrew Davidson (Glasgow Warriors/Glasgow Hawks)
6 Lewis Wynne (Stirling County)
7 Jamie Ritchie CAPTAIN (Edinburgh Rugby)
8 Magnus Bradbury (Edinburgh Rugby)
Replacements
16 Sam James (Bedford Blues)
17 Callum Sheldon (Edinburgh Rugby/Watsonians)
18 Jack Owlett (Exeter University)
19 Ally Miller (Edinburgh Rugby/Watsonians)
20 Ruaridh Knott (Melrose)
21 George Horne (Glasgow Hawks)
22 Tom Galbraith (Melrose)
23 Archie Russell (Stirling County)