| Year | Maths | Physics | Chemistry | Biology |
| 2009 | TC Lacy | JN Woodmansey | ||
| 2008 | MC Menzies | |||
| 2007 | MC Menzies | J Ge NM Malouf KV Ramesh |
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| 2006 | CX Li | MG Frazis KV Ramesh |
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| 2004 | LS Field | NR Iyer | ||
| 2003 | LS Field | JA Simonian | OT Thorn-Seshold | |
| 2002 | DL-HChan | OT Thorn-Seshold | ||
| 2001 | DL-H Chan | S Mahadev D Miller |
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| 2000 | DL-H Chan | S Mahadev D Miller |
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| 1998 | JE Koonin | |||
| 1997 | TFY Lam | S Nayak DM Trambaiolo |
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| 1996 | CS Rapmund JSS Toh |
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| 1995 | J Huppert | |||
| 1994 | D Marlay | T Karakaidos | ||
| 1993 | A Henderson | |||
| 1992 | A Henderson | |||
| 1991 | A Banner A Henderson |
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| 1988 | D Jackson | D Jackson | ||
| 1987 | L Seberry | |||
| 1984 | AD Blair J Kramer |
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| 1982 | AD Blair | |||
| 1981 | AD Blair |
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