View the Matthews course description and training schedule below. Currently there is no charge for attending Matthews classes but you must register either online or by printing the form, then e-mail or fax. Click on the items below for the schedule and registration forms. As there is no fee, this is the only class that PPG provides that does not require you to get a purchase order number from your nearest Ben’s location. All other PPG classes are fee-based and will need a P.O. number. Lunches and a dinner are provided during this 2-day session.