'in', 'on' or 'by'

You can say either "by bus" or "on the bus." (American usage.)

The most natural way to say it would be "My daughter takes the bus to school" - but that doesn't answer your preposition question.

Grammar GeekYou can say either "by bus" or "on the bus." (American usage.)

The most natural way to say it would be "My daughter takes the bus to school" - but that doesn't answer your preposition question.

You can say either "by bus" or "on the bus." (American usage.)

'on the bus' is also BrE

I try to never assume anymore. Too many times, I have posted something only to find out later that it's not the same elsewhere.

Yoong LiatDo your children go to school by /on / in the school bus? (Which preposition should I use?)

[By] to me is the only logical choice with the context of this question.

How do your children go to school? They go by school bus. I think it sounds rather odd with [on the bus].

I've changed my opinion, after more searches on sites which should be predominantly BrE:

At Yahoo:
50 for "go to school by bus" bbc
0 for "go to school on bus" bbc

0 "go to school by the bus" bbc
16 for "go to school on the bus" bbc

With "on" you need the article. I'm not surprised there were no hits for "on bus."

They go by bus, they take the bus, they ride the bus - all normal.

They ride on the bus - also normal. (We use "the" because the expectation here is that kids would take a school bus, so "the" bus means the school bus that services their neighborhood.)

Goodman

Yoong LiatDo your children go to school by /on / in the school bus? (Which preposition should I use?)

[By] to me is the only logical choice with the context of this question.

How do your children go to school? They go by school bus. I think it sounds rather odd with [on the bus].

Here's a BrE view: as a general rule we can say that by is used when speaking of a means of transport in general, while in and on are used when speaking about a specific vehicle.
I go to work by bus or on the no. 70 bus.
He's coming