Vanguard Small-Cap Growth (NYSEArca: VBK)

Annual Fee: 0.09%

Comment: Sticking with the time advantage inherent in a college savings portfolio, this collection of ETFs should include some small-cap exposure. Investors with some tolerance for risk can employ a growth bias to small-caps with VBK, an ETF that is less expensive than 93% of competing funds according to Vanguard data.