I guess it depends on the girl. I'd be willing to go out on a limb and risk stereotyping and link this with another discussion on here recently; the one about girls dating guys their own age. (looked for link but no luck)
I think those that like older guys do that for the experience and to be 'controlled', and therefore wouldn't like to be the teacher.
Those that could tolerate guys their own age, I'd bet, would be more accepting of an inexperienced guy; they are more won over by the "cute" type, which is probably the best way to play inexperience.