2007 Colonial Hills Conference XC Champion
2007 North I Group 1 XC Section Champion

2008 Group 1 1600m & 3200m Champion
2008 Colonial Hills Conference XC Champion
2008 North II Group I XC Section Champion
2008 Group 1 XC Champion
2008 Essex County XC Runner of the Year (Star Ledger)

2009 Essex County 800m & 1600m Champion
2009 North II Group I 1600m & 3200m Champion
2009 Group I 1600m & 3200m Champion

2009 Essex County XC Champion
2009 Group I XC Champion
2009 Essex County XC Runner of the Year (Star Ledger)

Note: Oster did not run 1600m at 2010 Essex Championships
The record is an error.