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Can I say,

(A) The students are boarding (up) the school bus.

(b) They are queuing (up) to board (up) the bus.

(c) The pupils like to board the school bus.
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Vincent TeoCan I say,(A) The students are boarding (up) the school bus. The "up" would not be used. "Boarding up" is what you do to an abandoned house after a hurricane has broken out all the windows.

(b) They are queuing (up) to board (up) the bus. Same as (A)

(c) is okay.

Regards, - A.

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Hi Vincent,

Can I say,
(a) The pupils queue (up) and board into the bus to go back home.


No. You 'board a bus'. You don't 'board into a bus'.

Clive
Students: We have free audio pronunciation exercises.
Comments  
Use these:

(A) The students are boarding the school bus.

(b) They are queuing (up) to board the bus.

(c) The pupils like to board the school bus.
 Avangi's reply was promoted to an answer.
Can I say,
(a) The pupils queue (up) and board into the bus to go back home.
Students: Are you brave enough to let our tutors analyse your pronunciation?
 Clive's reply was promoted to an answer.