1.  The most potentially dangerous part of a therapeutic riding lesson is the time spent at the mounting block.  Before mounting your rider, you must ensure the horse is standing quietly with his weight distributed equally on all four feet.  He should be standing as close to the edge of the mounting platform as possible so that the rider doesn't have to stretch over a large gap between the horse and himself. 
 
2. When teaching a group lesson, an instructor must be sure to divide the lesson time fairly between all the riders.  This does not necessarily mean that everyone should get exactly the same amount of time.  Some riders may need a little more help than others on some aspects of the lessons, however, the instructor should not get so involved teaching one rider that the others don't get the help they also need and deserve. 

If you have any specific questions, please feel free to contact us at president@ontra.ca and we would be happy to answer your questions, or put you in touch with a relevant professional to help you with your query.