Since the Polecats were first formed back in 1971, the club has been one of the most successful in Tertiary League history.
With 16 First Grade, 6 Second Grade and 6 Third Grade Premierships, the Polecats have taken home more silverwear within the Tertiary League than any other club.
The Polecats have appeared in over 50 Grand Finals as a club.
| Year | First Grade | Second Grade | Third Grade |
| 1971 | |||
| 1972 | |||
| 1973 | |||
| 1974 | |||
| 1975 |
Premiers C.C.E vs. Sydney University 22 – 11 |
Semi Finalist C.C.E vs. NSW University 11 – 20 |
|
| 1976 |
Premiers
|
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| 1977 | |||
| 1978 | |||
| 1979 | |||
| 1980 | |||
| 1981 |
Premiers
|
||
| 1982 |
Runners Up C.C.E.S vs. State Rail |
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| 1983 |
Premiers C.C.E.S vs. Macquarie Uni 22 – 8 |
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| 1984 |
Runners Up C.C.E.S vs. Macquarie Uni 14 – 17
|
Premiers C.C.E.S vs. RAAF 16 – 11   |
|
| 1985 |
Premiers C.C.E.S vs. Wollongong Uni 22 – 12  |
||
| 1986 |
Premiers C.C.E.S vs. Macquarie Uni 20 – 0  |
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| 1987 |
Premiers C.C.E.S vs. Macquarei Uni 36 – 22 |
Final C.C.E.S vs. Nepean C.A.E 12 – 14 |
|
| 1988 |
Runners Up C.C.E.S vs. Macquarie Uni 0 – 4  |
Runners Up C.C.E.S vs. Macquarie Uni 8 – 21  |
Premiers C.C.E.S vs. S.R.A 8 – 6 |
| 1989 |
Premiers C.C.E.S vs. Hornsby 14 -13  |
Premiers C.C.E.S vs. Uni of NSW 17 – 6  |
Runners Up C.C.E.S vs. Sydney Uni 4 – 18  |
| 1990 |
Runners Up C.C.E.S vs. Uni of NSW 16 -38  |
Runners Up C.C.E.S vs. Macquarie Uni 14 – 18  |
Premiers C.C.E.S vs. SRA 30 – 0  |
| 1991 |
Runners Up C.C.E.S vs. Uni of NSW |
Premiers
|
|
| 1992 |
Premiers A.C.U vs. Cumberland 20 – 19  |
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| 1993 |
Premiers
|
Runners Up A.C.U vs. Uni of NSW |
|
| 1994 |
Premiers A.C.U vs. Uni of NSW 10 – 6  |
Premiers A.C.U vs. Mitchell Old Boys 12 – 10  |
|
| 1995 |
Runners Up A.C.U vs. UTS |
Semi Final Series
|
|
| 1996 |
Premiers sA.C.U vs. Cumberland 46 – 10 |
Premiers A.C.U vs. UTS 23 -20  |
|
| 1997 |
Runners Up
A.C.U vs. UTS |
Premiers
|
|
| 1998 |
Semi Final Series
|
||
| 1999 |
Premiers A.C.U vs. Canberra Uni 16 – 12  |
Runners Up A.C.U vs. UTS |
|
| 2000 |
Runners Up A.C.U vs. Sydney Uni |
Runners Up A.C.U vs. State Rail |
|
| 2001 |
Runners Up Nirimba vs. UTS |
Premiers
|
|
| 2002 |
Runners Up Nirimba vs. Sydney Uni |
Premiers
|
|
| 2003 |
Premiers Nirimba vs. UTS 31 – 30  |
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| 2004 |
Runners Up Nirimba vs. UTS |
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| 2005 |
Premiers Nirimba vs. UWS Macarthur 32 – 10  |
||
| 2006 |
Semi Final Series
|
Runners Up Nirimba vs. Macquarie 14 – 24  |
|
| 2007 |
Runners Up Nirimba vs. UTS 30 – 40  |
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| 2008 |
Premiers Norwest vs. West Sydney Blues 14 – 12  |
Minor Semi Final Norwest vs. Cumberland 12 – 18 |
|
| 2009 | |||
| 2010 |
Runners Up Norwest vs. West Sydney Blues 18 – 19  |
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| 2011 |
Runners Up Norwest vs. Lewisham Old Boys 20 – 22  |
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| 2012 |
Premiers Norwest vs. UTS Tigers 20 – 16  |
Runners Up Norwest vs. UTS Tigers 18 – 24  |
|
| 2013 | |||
| 2014 | |||
| 2015 | Premiers Norwest vs. UTS Tigers 20 – 16 |
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| 2016 |
Runners Up
TAFE WSI Polecats vs. UTS Tigers 16 – 24  |
Runners Up
TAFE WSI Polecats vs. UC Grizzlies 14 – 38  |
|
| 2017 | Premiers TAFE NSW Polecats vs. UTS Tigers 24 – 16 |
Runner Up TAFE NSW Polecats vs. UTS Tigers 22 – 28 |
|
| 2018 |
Runners Up
Macquarie Uni vs. TAFE NSW Polecats 16 – 26  |
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| 2019 |
Premiers
TAFE NSW Polecats vs. UTS Wanderers 26 – 8  |
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| 2020 |
Runners Up
UTS Wanderers vs. TAFE NSW Polecats 46 – 18  |
