Select a DATE for your sale. Plan to set up a table in a prominent location at least 2 days in succession. Make sure you will have the right student traffic flow. The students most likely to be registered for these tests are seniors. Choose a TIME for the sale.
All day is best.
Otherwise, set up your table for morning or afternoon, including lunch hour. For most effective sales, stay at the same location for at least 2 days. Arrange for publicity a few weeks ahead of the sale. Write your info in the provided spaces. Reserve a table and some chairs and have a container for your money.