The lead changed five times through the match, held in ideal conditions.

TAS put the first points on the board with captain Will Swales slotting a penalty early, but Scots gained the advantage and rebounded from a missed penalty with a converted try, the score sitting at 7-3 to the visitors at the break.

Regrouping in the second half the hosts bounced back with Hamish Cannington crossing the line and Swales converting but the visitors soon reciprocated, regaining the lead 10-14. Some tense play followed before a dash down the sideline saw Cannington cross a second time and Swales' boot again finding the extra points, delivering TAS the game.

Captain Will Swales said the significance of playing their last home game for the season and for some their final on TAS soil on what was the school's Reunion Weekend, in its 125th year, was not lost on the paddock.

"It was pretty intense in the sheds before we ran out and we were a bit shaky at the start. It was some of the more emotional footy we've played which contributed to some over-thinking and some ball handling errors in the first half, and there were definitely points in the game where I wasn't sure we were able to do it," he said.

"We composed ourselves in the second half though and it was great to get the job done especially on such a special weekend."

Co-coach Alan Jones praised the boys' efforts and said the win, in the second last round, has kept the competition open for the final matches next Saturday.

"I was pretty happy with the way the boys played. I think with some of the Year 12 boys, this being their last game at TAS, the emotion got the better of them at times and they didn't play as well as they could have, but in the end we'll take the win which keeps us in contention for the premiership if a few things go the right way," he said.

"It has been an injury plagued season for us and I don't think we've run the same side out two weeks in a row yet, so we're banking on a win against Riverview to keep us in the mix, particularly if Scots can get up against St Joseph's this Saturday as well."

The boys were led onto the field by 13s player Brock Galvin kitted in an historic 1930s jersey owned by former TAS First XV and AAGPS rep Ross Connah and a 110-year old rugby honours cap awarded to 1909 Senior Prefect Frederick Forster. Eight teams will travel to Sydney to play St Ignatius College Riverview in the last round of GPS matches with the TAS Firsts kicking off at 1pm.