WALL, N.J. - Student Transportation Inc. announced it is completing the acquisition of three school bus companies, two in Canada and one in the U.S., and its stock is now traded on the NASDAQ Global Select Market.

Since December 2004, Student Transportations income participating securities have been trading on the Toronto Stock Exchange.

Now, its common stock will be traded on NASDAQ and its convertible debentures will be trade on the Toronto exchange.

Student Transportations latest acquisitions include A and B Bus Co. of Irwindale, Calif., which has been providing student transportation in southern California for nearly 40 years.

The business consists of contracted public home-to-school bus routes as well as athletic and field trips.

As part of the deal, Ken Ehlers, president of A and B Bus, will remain with the company and continue to manage the A and B operations.

STI entered into a long-term lease of the A and B property and is funding the acquisition through its existing credit facility. Terms were not announced.

Also being acquired by Student Transportation are two Ontario school bus operators -- Schumacher Bus Lines of Schumacher and S & K Transportation Ltd. of Listowel. Student Transportation said the companies are "tuck-ins" to existing locations.

The three acquisitions, along with a pending deal, will add a combined $7.5 million in annual revenue.

Student Transportation also said it had been awarded 10 new contracts to provide pupil transportation beginning this school year. The contracts will add more than $12.5 million in new revenue annually.

Sun Mergers & Acquisition LLC of Hasbrouck Heights, N.J., initiated the A and B transaction, and acted as financial adviser and negotiated the deal on behalf of the company. Sun said it has completed seven school bus transactions during the past year.