When do students log on and how long do lessons take?

The majority of students participate in PenPal Schools in the classroom during the school day. Lessons typically take 30-45 minutes each, so a topic containing 4 lessons would typically take 3-5 class periods. Some teachers choose to assign PenPal Schools as homework or to participate as an after-school activity. All topics are self-paced, making it easy for students to participate and easy for teachers to fit into their curriculum.