Review the homeschooling regulations in your state and study the recommendations they make regarding timetabling. The various departments of education have experience with people who want to make their own school timetables, so it is a good idea to consider their advice.
Consult other parents and teachers about how they make their own school timetables. Getting some advice from people who have experience in this matter could save you from making timetabling mistakes that you will later have to correct.
Involve your children or students in the timetabling process. It is a good investment of time to find out when the children want to do specific subjects. Listen to what they say and notice how they begin to take ownership of the timetable. They will work harder as a result. You may even want to consider individual timetables for students.
Determine how long an attention span your child has. Elementary level students can concentrate for half an hour. Older students should be able to work on a project for an hour or more at a time. Plan accordingly.
Alternate easy subjects with harder ones. After an hour of English, physical education might be a good subject to schedule next. Then the students can come back to an hour of biology.
Schedule breaks. In a flexible situation it is easy to progress from one subject to another or to get caught up in what is happening. Children, particularly young ones, need to get away from the books on a regular basis, even if it is only for five or 10 minutes at a time.
Design a timetable or download one from the Internet and fill in the subjects in different colors. Display your timetable in a prominent position, where the students can easily refer to it.
Test your timetable and see how well it is working. If, after a week or two, you find the timetable it isn't doing what you want, change it. Keep tweaking the timetable until you find one that is a good match with your school.