Are there any buses or other public transportation ways to get from Houston, TX to College Station, TX?

I'm flying into Houston and need to get to Texas A&M in College Station. It costs twice as much to take a charter plane from Houston to Texas A&M, so I'd rather skip the connector flight and take a bus or something similar (not a cab) to save some money. Does anyone know anything about a possible Greyhound bus route or shuttle service between the two cities? And if you have a link with schedules that would be really helpful. Thanks!