Schedule Classes

I am the only softward app trainer in my company. I am responsible for offering classes on Windows Apps (Word, Excel, Windows, Internet, email, etc.) We are a construction company and my boss just recently asked me to come up with a training schedule for January, February, and March. Does anyone out there have a sample class schedule that they have designed? I’m wondering about lengths of classes, how many in a day, etc. How do you schedule your classes?