The Maverick Makes the Grade

Widower rancher Win Jackson believes he will never love again. When he moves to Bronco with his boys to take an agribusiness position at the high school, he is hoping only for a fresh start for his kids. Fellow schoolteacher Stacy Abernathy catches him by surprise. She's too young, too pretty and way too optimistic for a cowboy like Win. But Stacy senses an instant connection to Win that feels suspiciously like the Real Thing, and she's ready to risk it all to be his woman for keeps...

From Harlequin Montana Mavericks:

Book 1: Redeeming the Maverick by Christine Rimmer
Book 2: The Maverick Makes the Grade by Stella Bagwell
Book 3: That Maverick of Mine by Kathy Douglass