There are several ways to wire a stratocaster. The more versitile and complicated ones require someone with the knowledge of exactly how to do them. Some, so called, techs have a hard time doing a regular strat wiring job. A real good tech will usually know how to do the optional ways.
I have almost all my strats wired up like Mudcat was saying, with the bottom tone control wired to the bridge pickup. This is because I use the bridge pickup a lot and like to have control over its tone. On mine tone control next to the volume control works when the switch is on the neck pickup and the neck/middle pickups combined, the other tone control works on the middle/bridge pickup combined and the bridge switch positions. The middle switch position is on the middle pickup with no tone control, the middle pickup is "wide open" like the bridge pickup on your strat - no tone control.
It is easy to have control over the middle pickup too and I might try that soon.
You can also have it wired so that all three pickups are on at once, and there are even more ways to wire the pickups.